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Medappa M, Pospíšilová P, John LN, González-Beiras C, Vall-Mayans M, Mitjà O, Šmajs D. Sequence typing of Haemophilus ducreyi isolated from patients in the Namatanai region of Papua New Guinea: Infections by Class I and Class II strain types differ in ulcer duration and resurgence of infection after azithromycin treatment. PLoS Negl Trop Dis 2024; 18:e0012398. [PMID: 39146379 PMCID: PMC11349228 DOI: 10.1371/journal.pntd.0012398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2024] [Revised: 08/27/2024] [Accepted: 07/23/2024] [Indexed: 08/17/2024] Open
Abstract
Haemophilus ducreyi (HD) is an important cause of cutaneous ulcers in several endemic regions, including the Western Pacific Region, especially among children. An HD sequence typing on swab samples taken from 1,081 ulcers in the Namatanai district of Papua New Guinea, during the pilot study for treatment of yaws, has been performed using the Grant typing system. Of the 363 samples that tested positive for the 16S rDNA of HD, the dsrA sequences of 270 samples were determined. Altogether they revealed 8 HD strain types circulating in Namatanai, including seven strain types of Class I (I.3, I.4, I.5, I.9, I.10, I.11, I.12) and one strain of Class II (II.3); four Class I types (I.9, I.10, I.11, I.12) were novel. The southern region of Namatanai (Matalai Rural) was identified as the region with the lowest genotype diversity and with most infections caused by HD Class II. The middle and northern subdistricts were affected mainly by HD Class I. Analysis of patient characteristics revealed that Class II HD infections were more often represented by longer-lasting ulcers than Class I HD infections. An increase in the prevalence of the I.10 strain was found after azithromycin administration compared to the untreated population at baseline likely reflecting higher infectivity of HD Class I, and more specifically strain type I.10.
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Affiliation(s)
- Monica Medappa
- Department of Biology, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Petra Pospíšilová
- Department of Biology, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Lucy N. John
- National Department of Health, Aopi Centre, Port Moresby, Papua New Guinea
| | - Camila González-Beiras
- Skin Neglected Tropical Diseases and Sexually Transmitted Infection section, Fight Infectious Diseases Foundation, University Hospital Germans Trias i Pujol, Badalona, Spain
- Universitat Autónoma de Barcelona, Bellaterra (Cerdanyola del Vallés), Spain
| | - Marti Vall-Mayans
- Universitat Autónoma de Barcelona, Bellaterra (Cerdanyola del Vallés), Spain
| | - Oriol Mitjà
- Skin Neglected Tropical Diseases and Sexually Transmitted Infection section, Fight Infectious Diseases Foundation, University Hospital Germans Trias i Pujol, Badalona, Spain
- Universitat Autónoma de Barcelona, Bellaterra (Cerdanyola del Vallés), Spain
| | - David Šmajs
- Department of Biology, Faculty of Medicine, Masaryk University, Brno, Czech Republic
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Medappa M, Pospíšilová P, John LN, González-Beiras C, Mitjà O, Šmajs D. Coinfection of a yaws patient with two closely related Treponema pallidum subsp. pertenue strains: A rare event with potential evolutionary implications. Acta Trop 2024; 256:107254. [PMID: 38759832 DOI: 10.1016/j.actatropica.2024.107254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 04/04/2024] [Accepted: 05/15/2024] [Indexed: 05/19/2024]
Abstract
The etiological agent of yaws is the spirochete Treponema pallidum (TP) subsp. pertenue (TPE) and infects the children of Papua New Guinea, causing ulcerative skin lesions that impairs normal growth and development. Closely related strains of Treponema pallidum subsp. pertenue, JE11, and TE13 were detected in an ulcer biospecimen derived from a 5-year-old yaws patient. Cloning experiments validated the presence of two distinct but similar genotypes, namely TE13 and JE11, co-occurring within a single host. While coinfection with highly related TPE strains has only limited epidemiological and clinical relevance, this is the first documented coinfection with genetically distinct TP strains in a single patient. Similar coinfections in the past were explained by the existence of over a dozen recombinant loci present in the TP genomes as a result of inter-strain or inter-subspecies recombination events following an anticipated scenario of TP coinfection, i.e., uptake of foreign DNA and DNA recombination.
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Affiliation(s)
- Monica Medappa
- Department of Biology, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Petra Pospíšilová
- Department of Biology, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Lucy N John
- Faculty of Medicine, University of Barcelona, Barcelona, Spain; National Department of Health, Aopi Centre, Port Moresby, Papua New Guinea
| | - Camila González-Beiras
- Skin Neglected Tropical Diseases and Sexually Transmitted Infections section, Fight Infectious Diseases Foundation, Hospital Universitari Germans Traís i Pujol, Badalona, Spain; Universitat Autónoma de Barcelona, 08193 Bellaterra (Cerdanyola del Vallés), Spain
| | - Oriol Mitjà
- Skin Neglected Tropical Diseases and Sexually Transmitted Infections section, Fight Infectious Diseases Foundation, Hospital Universitari Germans Traís i Pujol, Badalona, Spain; Universitat Autónoma de Barcelona, 08193 Bellaterra (Cerdanyola del Vallés), Spain
| | - David Šmajs
- Department of Biology, Faculty of Medicine, Masaryk University, Brno, Czech Republic.
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Cutfield T, Motuhifonua SK, Blakiston M, Bhally H, Duffy E, Lane R, Otte E, Swager T, Taylor AM, Playle V. Strongyloidiasis in Auckland: A ten-year retrospective study of diagnosis, treatment and outcomes of a predominantly Polynesian and Fijian migrant cohort. PLoS Negl Trop Dis 2024; 18:e0012045. [PMID: 38547314 PMCID: PMC11003684 DOI: 10.1371/journal.pntd.0012045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Revised: 04/09/2024] [Accepted: 03/05/2024] [Indexed: 04/11/2024] Open
Abstract
BACKGROUND Strongyloides stercoralis is not endemic in Aotearoa New Zealand (AoNZ). However, approximately one third of Auckland residents are born in endemic countries. This study aimed to describe the epidemiology and management of strongyloidiasis in Auckland, with a focus on migrants from Pacific Island Countries and Territories. METHODS This study retrospectively reviewed clinical, laboratory and pharmacy records data for all people diagnosed with strongyloidiasis in the Auckland region between July 2012 and June 2022. People with negative Strongyloides serology were included to estimate seropositivity rate by country of birth. FINDINGS Over ten years, 691 people were diagnosed with strongyloidiasis. Most diagnoses were made by serology alone (622, 90%). The median age was 63 years (range 15-92), 500 (72%) were male, and the majority were born in Polynesia (350, 51%), Fiji (130, 19%) or were of Pasifika ethnicity (an additional 7%). Twelve participants (1.7%) had severe strongyloidiasis at diagnosis. The total proportion treated with ivermectin was only 70% (484/691), with no differences between immunocompromised and immunocompetent participants, nor by ethnicity. The outcome of treatment (based on a combination of serology and/or eosinophilia and/or stool microscopy) could only be determined in 50% of the treated cohort. One participant failed treatment with ivermectin, experiencing recurrent strongyloidiasis, and another participant died in association with severe strongyloidiasis. The rate of 'positive' Strongyloides serology was highest among participants born in Samoa (48%), Fiji (39%), and Southeast Asian countries (34%). INTERPRETATION Strongyloidiasis was common and under-treated in Auckland during the study period. Clinicians should have a low threshold for considering strongyloidiasis in migrants from endemic countries, including Polynesia and Fiji.
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Affiliation(s)
- Tim Cutfield
- Department of Infectious Diseases, Te Whatu Ora Counties Manukau, Auckland, New Zealand
| | - Soana Karuna Motuhifonua
- Faculty of Medical and Health Sciences, The University of Auckland, Park Road, Grafton, Auckland, New Zealand
| | - Matthew Blakiston
- Department of Microbiology, Labtests Auckland, Mount Wellington, Auckland, New Zealand
| | - Hasan Bhally
- Department of Infectious Diseases, Te Whatu Ora Waitematā, Takapuna, Auckland, New Zealand
| | - Eamon Duffy
- Faculty of Medical and Health Sciences, The University of Auckland, Park Road, Grafton, Auckland, New Zealand
- Department of Infectious Diseases, Te Whatu Ora Te Toka Tumai Auckland, Grafton, Auckland, New Zealand
| | - Rebekah Lane
- Department of Infectious Diseases, Te Whatu Ora Te Toka Tumai Auckland, Grafton, Auckland, New Zealand
| | - Erik Otte
- Department of Microbiology, Canterbury Health Laboratories, Hagley Avenue, Christchurch Central City, Christchurch, New Zealand
| | - Terri Swager
- LabPLUS Auckland, Auckland City Hospital, Grafton, Auckland
| | - Amanda Maree Taylor
- Faculty of Medical and Health Sciences, The University of Auckland, Park Road, Grafton, Auckland, New Zealand
| | - Veronica Playle
- Department of Infectious Diseases, Te Whatu Ora Counties Manukau, Auckland, New Zealand
- Faculty of Medical and Health Sciences, The University of Auckland, Park Road, Grafton, Auckland, New Zealand
- LabPLUS Auckland, Auckland City Hospital, Grafton, Auckland
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Yadav A, Yadav S, Alam A. A Landscape on Lymphatic Filariasis with its Effects and Recent Advanced Treatments. RECENT ADVANCES IN ANTI-INFECTIVE DRUG DISCOVERY 2024; 19:197-215. [PMID: 38317463 DOI: 10.2174/0127724344266902231117112109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 10/03/2023] [Accepted: 10/05/2023] [Indexed: 02/07/2024]
Abstract
Lymphatic filariasis is an infection caused by parasites that poses a significant health, social, and economic burden, affecting a vast population that exceeds 120 million individuals globally. The Etiology of the infection is attributed to three nematode parasites, namely Wuchereria bancrofti, B. timori, and Brugia malayi, as well as which are phylogenetically related. These parasites are transmitted to humans via mosquitoes belonging to the Anopheles, Aedes genera, and Culex. As per the estimation provided by the WHO, the current number of individuals infected with filariasis stands at approximately 120 million across 81 countries. Furthermore, it is estimated that around 1.34 billion individuals reside in regions that are endemic to filariasis, thereby putting them at risk of contracting the disease. Different synthetic drugs such as Ivermectin, Doxycycline, Albendazole, and Suramin are used in the treatment. Some natural plants are Azadirachta indica, Tinospora cordifolia, Zingiber officinal, as well as, some marine sources are also included for better treatment. We also touch briefly on a few additional filarial diseases. Although there are only a few medications available to treat filariasis, their frequent usage may result in drug resistance. Furthermore, there is no effective vaccination for the treatment of filariasis. Due to these restrictions, it has been crucial to create new anti-filarial medications, which motivates researchers to find novel pharmaceuticals with anti-filarial action. In this article, we examine the latest achievements in the anti-filarial area, including the many forms of filariasis and their historical contexts, elimination programmes, various therapeutic classes (both synthetic and natural), investigated product-derived targets as well as clinical investigations.
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Affiliation(s)
- Agrima Yadav
- Department of Pharmacy, School of Medical and Allied Sciences, Galgotias University, Greater Noida, Uttar Pradesh, India
| | - Shikha Yadav
- Department of Pharmacy, School of Medical and Allied Sciences, Galgotias University, Greater Noida, Uttar Pradesh, India
| | - Aftab Alam
- Department of Pharmacy, School of Medical and Allied Sciences, Galgotias University, Greater Noida, Uttar Pradesh, India
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Emanghe UE, Imalele EE, Ogban GI, Owai PA, Abraka BA. Awareness and knowledge of scabies and ringworm among parents of school-age children in Calabar, Cross River State, Nigeria: Implications for prevention of superficial skin infestations. Ann Afr Med 2024; 23:62-69. [PMID: 38358173 PMCID: PMC10922176 DOI: 10.4103/aam.aam_82_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 09/30/2023] [Accepted: 10/31/2023] [Indexed: 02/16/2024] Open
Abstract
Context Risk factors for the persistence of superficial skin infestations are prevalent in humid tropical environments, which are favorable for breeding of the causative vector mite Sarcoptes scabiei (ectoparasite) and dermatophyte fungi. Aim This study aimed at assessing the awareness and knowledge of childhood scabies and ringworm infestations among parents in Calabar, a highly humid rainforest tropical environment. Settings and Design Cross-sectional study design and systematic random sampling were used to recruit school-age children in selected primary schools in Calabar. Materials and Methods Researcher-driven administration of a structured questionnaire was conducted to obtain quantitative data from parents of recruited children. Statistical Analysis Used : Chi-square was used to assess factors associated with ever hearing or seeing scabies and ringworm infestations. Statistical significance was set at P < 0.05. Results One hundred and eighty-two (56.7%) and 218 (67.9%) of the respondents had heard of or seen scabies and ringworm infestation. Among respondents that were aware of scabies, 53.3% knew of the cause, 50.5% were aware of the risk factors while 68.1% and 78.0% knew their treatment and prevention, respectively; 98.6%, 60.6%, 76.6%, and 80.7% of respondents knew the cause, risk factors, treatment, and prevention of ringworm infestation, respectively. Fathers with at least secondary school literacy level and sharing beds were significantly associated with awareness of scabies. Conclusion There is a suboptimal level of awareness and knowledge of two of the most common superficial skin infestations among parents of primary school children in the study setting. There is a need to redouble our effort at sensitization of parents toward improved awareness of these common infestations.
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Affiliation(s)
- Ubleni Ettah Emanghe
- Department of Medical Microbiology and Parasitology, University of Calabar, Calabar, Cross River State, Nigeria
| | - Edema Enogiomwan Imalele
- Department of Zoology and Environmental Biology, University of Calabar, Calabar, Cross River State, Nigeria
| | - Godwin Ibitham Ogban
- Department of Medical Microbiology and Parasitology, University of Calabar, Calabar, Cross River State, Nigeria
| | - Promise Akugom Owai
- Department of Medical Microbiology and Parasitology, University of Calabar, Calabar, Cross River State, Nigeria
| | - Bode Akashie Abraka
- Department of Medical Microbiology and Parasitology, University of Calabar, Calabar, Cross River State, Nigeria
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Teiti I, Aubry M, Fernandes-Pellerin S, Patin E, Madec Y, Boucheron P, Vanhomwegen J, Torterat J, Lastère S, Olivier S, Jaquaniello A, Roux M, Mendiboure V, Harmant C, Bisiaux A, Rijo de León G, Liu D, Bossin H, Mathieu-Daudé F, Gatti C, Suhas E, Chung K, Condat B, Ayotte P, Conte E, Jolly N, Manuguerra JC, Sakuntabhai A, Fontanet A, Quintana-Murci L, Cao-Lormeau VM. Unravelling the determinants of human health in French Polynesia: the MATAEA project. FRONTIERS IN EPIDEMIOLOGY 2023; 3:1201038. [PMID: 38455935 PMCID: PMC10911015 DOI: 10.3389/fepid.2023.1201038] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Accepted: 08/15/2023] [Indexed: 03/09/2024]
Abstract
Background French Polynesia is a French overseas collectivity in the Southeast Pacific, comprising 75 inhabited islands across five archipelagoes. The human settlement of the region corresponds to the last massive migration of humans to empty territories, but its timeline is still debated. Despite their recent population history and geographical isolation, inhabitants of French Polynesia experience health issues similar to those of continental countries. Modern lifestyles and increased longevity have led to a rise in non-communicable diseases (NCDs) such as obesity, diabetes, hypertension, and cardiovascular diseases. Likewise, international trade and people mobility have caused the emergence of communicable diseases (CDs) including mosquito-borne and respiratory diseases. Additionally, chronic pathologies including acute rheumatic fever, liver diseases, and ciguatera, are highly prevalent in French Polynesia. However, data on such diseases are scarce and not representative of the geographic fragmentation of the population. Objectives The present project aims to estimate the prevalence of several NCDs and CDs in the population of the five archipelagoes, and identify associated risk factors. Moreover, genetic analyses will contribute to determine the sequence and timings of the peopling history of French Polynesia, and identify causal links between past genetic adaptation to island environments, and present-day susceptibility to certain diseases. Methods This cross-sectional survey is based on the random selection of 2,100 adults aged 18-69 years and residing on 18 islands from the five archipelagoes. Each participant answered a questionnaire on a wide range of topics (including demographic characteristics, lifestyle habits and medical history), underwent physical measurements (height, weight, waist circumference, arterial pressure, and skin pigmentation), and provided biological samples (blood, saliva, and stool) for biological, genetic and microbiological analyses. Conclusion For the first time in French Polynesia, the present project allows to collect a wide range of data to explore the existence of indicators and/or risk factors for multiple pathologies of public health concern. The results will help health authorities to adapt actions and preventive measures aimed at reducing the incidence of NCDs and CDs. Moreover, the new genomic data generated in this study, combined with anthropological data, will increase our understanding of the peopling history of French Polynesia. Clinical trial registration https://clinicaltrials.gov/, identifier: NCT06133400.
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Affiliation(s)
- Iotefa Teiti
- Laboratory of Research on Emerging Viral Diseases, Institut Louis Malardé, Papeete, French Polynesia
| | - Maite Aubry
- Laboratory of Research on Emerging Viral Diseases, Institut Louis Malardé, Papeete, French Polynesia
| | | | - Etienne Patin
- Institut Pasteur, Université Paris Cité, CNRS UMR2000, Human Evolutionary Genetics Unit, Paris, France
| | - Yoann Madec
- Institut Pasteur, Université Paris Cité, Epidemiology of Emerging Diseases Unit, Paris, France
| | - Pauline Boucheron
- Institut Pasteur, Université Paris Cité, Epidemiology of Emerging Diseases Unit, Paris, France
| | - Jessica Vanhomwegen
- Environment and Infectious Risk Unit, Laboratory for Urgent Response to Biological Threats, Institut Pasteur, Paris, France
| | - Jérémie Torterat
- Institut de la Statistique de la Polynésie Française, Papeete, French Polynesia
| | - Stéphane Lastère
- Clinical Laboratory, Centre Hospitalier de la Polynésie Française, Pirae, French Polynesia
| | - Sophie Olivier
- Clinical Laboratory, Institut Louis Malardé, Papeete, French Polynesia
| | - Anthony Jaquaniello
- Institut Pasteur, Université Paris Cité, CNRS UMR2000, Human Evolutionary Genetics Unit, Paris, France
- Institut Pasteur, Data Management Core Facility, Paris, France
| | - Maguelonne Roux
- Institut Pasteur, Université Paris Cité, CNRS UMR2000, Human Evolutionary Genetics Unit, Paris, France
- Institut Pasteur, Université de Paris, Bioinformatics and Biostatistics Hub, Paris, France
| | - Vincent Mendiboure
- Institut Pasteur, Université Paris Cité, Epidemiology of Emerging Diseases Unit, Paris, France
| | - Christine Harmant
- Institut Pasteur, Université Paris Cité, CNRS UMR2000, Human Evolutionary Genetics Unit, Paris, France
| | - Aurélie Bisiaux
- Institut Pasteur, Université Paris Cité, CNRS UMR2000, Human Evolutionary Genetics Unit, Paris, France
| | - Gaston Rijo de León
- Institut Pasteur, Université Paris Cité, CNRS UMR2000, Human Evolutionary Genetics Unit, Paris, France
| | - Dang Liu
- Institut Pasteur, Université Paris Cité, CNRS UMR2000, Human Evolutionary Genetics Unit, Paris, France
| | - Hervé Bossin
- Laboratory of Research in Medical Entomology, Institut Louis Malardé, Paea, French Polynesia
| | - Françoise Mathieu-Daudé
- Laboratory of Research in Medical Entomology, Institut Louis Malardé, Paea, French Polynesia
- UMR MIVEGEC-Infectious Diseases and Vectors, University of Montpellier, CNRS, IRD, Montpellier, France
| | - Clémence Gatti
- Laboratory of Marine Biotoxins, UMR241-Ecosystèmes Insulaires Océaniens (EIO) (IFREMER, ILM, IRD, UPF), Institut Louis Malardé, Papeete, French Polynesia
| | - Edouard Suhas
- Unit on non-Communicable Diseases, UMR241-Ecosystèmes Insulaires Océaniens (EIO) (IFREMER, ILM, IRD, UPF), Institut Louis Malardé, Papeete, French Polynesia
| | - Kiyojiken Chung
- Laboratory of Research on Emerging Viral Diseases, Institut Louis Malardé, Papeete, French Polynesia
| | - Bertrand Condat
- Department of Gastroenterology, Centre Hospitalier de la Polynésie Française, Pirae, French Polynesia
| | - Pierre Ayotte
- Centre de Toxicologie du Québec, Institut National de Santé Publique du Québec, QC, Canada
| | - Eric Conte
- Maison des Sciences de l’Homme du Pacifique, Université de la Polynésie Française, Punaauia, French Polynesia
| | - Nathalie Jolly
- Center for Translational Sciences, Institut Pasteur, Paris, France
| | - Jean-Claude Manuguerra
- Environment and Infectious Risk Unit, Laboratory for Urgent Response to Biological Threats, Institut Pasteur, Paris, France
| | - Anavaj Sakuntabhai
- Functional Genetics of Infectious Diseases Unit, Department of Global Health, Institut Pasteur, Paris, France
| | - Arnaud Fontanet
- Institut Pasteur, Université Paris Cité, Epidemiology of Emerging Diseases Unit, Paris, France
- PACRI Unit, Conservatoire National des Arts et Métiers, Paris, France
| | - Lluis Quintana-Murci
- Institut Pasteur, Université Paris Cité, CNRS UMR2000, Human Evolutionary Genetics Unit, Paris, France
- Chair Human Genomics and Evolution, Collège de France, Paris, France
| | - Van-Mai Cao-Lormeau
- Laboratory of Research on Emerging Viral Diseases, Institut Louis Malardé, Papeete, French Polynesia
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Middleton J, Colthart G, Dem F, Elkins A, Fairhead J, Hazell RJ, Head MG, Inacio J, Jimbudo M, Jones CI, Laman M, MacGregor H, Novotny V, Peck M, Philip J, Paliau J, Pomat W, Stockdale JA, Sui S, Stewart AJ, Umari R, Walker SL, Cassell JA. Health service needs and perspectives of a rainforest conserving community in Papua New Guinea's Ramu lowlands: a combined clinical and rapid anthropological assessment with parallel treatment of urgent cases. BMJ Open 2023; 13:e075946. [PMID: 37802618 PMCID: PMC10565268 DOI: 10.1136/bmjopen-2023-075946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 08/31/2023] [Indexed: 10/10/2023] Open
Abstract
OBJECTIVES Determine community needs and perspectives as part of planning health service incorporation into Wanang Conservation Area, in support of locally driven sustainable development. DESIGN Clinical and rapid anthropological assessment (individual primary care assessments, key informant (KI) interviews, focus groups (FGs), ethnography) with treatment of urgent cases. SETTING Wanang (pop. c189), a rainforest community in Madang province, Papua New Guinea. PARTICIPANTS 129 villagers provided medical histories (54 females (f), 75 males (m); median 19 years, range 1 month to 73 years), 113 had clinical assessments (51f, 62m; median 18 years, range 1 month to 73 years). 26 ≥18 years participated in sex-stratified and age-stratified FGs (f<40 years; m<40 years; f>40 years; m>40 years). Five KIs were interviewed (1f, 4m). Daily ethnographic fieldnotes were recorded. RESULTS Of 113 examined, 11 were 'well' (a clinical impression based on declarations of no current illness, medical histories, conversation, no observed disease signs), 62 (30f, 32m) were treated urgently, 31 referred (15f, 16m), indicating considerable unmet need. FGs top-4 ranked health issues concorded with KI views, medical histories and clinical examinations. For example, ethnoclassifications of three ((A) 'malaria', (B) 'sotwin', (C) 'grile') translated to the five biomedical conditions diagnosed most ((A) malaria, 9 villagers; (B) upper respiratory infection, 25; lower respiratory infection, 10; tuberculosis, 9; (C) tinea imbricata, 15) and were highly represented in declared medical histories ((A) 75 participants, (B) 23, (C) 35). However, 29.2% of diagnoses (49/168) were limited to one or two people. Treatment approaches included plant medicines, stored pharmaceuticals, occasionally rituals. Travel to hospital/pharmacy was sometimes undertaken for severe/refractory disease. Service barriers included: no health patrols/accessible aid post, remote hospital, unfamiliarity with institutions and medicine costs. Service introduction priorities were: aid post, vaccinations, transport, perinatal/birth care and family planning. CONCLUSIONS This study enabled service planning and demonstrated a need sufficient to acquire funding to establish primary care. In doing so, it aided Wanang's community to develop sustainably, without sacrificing their forest home.
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Affiliation(s)
- Jo Middleton
- Department of Primary Care and Public Health, Brighton and Sussex Medical School, Watson Building, University of Brighton, Falmer, UK
| | - Gavin Colthart
- Department of Primary Care and Public Health, Brighton and Sussex Medical School, Watson Building, University of Brighton, Falmer, UK
| | - Francesca Dem
- New Guinea Binatang Research Centre, Madang, Papua New Guinea
| | - Alice Elkins
- Department of Ecology and Evolution, University of Sussex, Falmer, UK
| | - James Fairhead
- Department of Anthropology, University of Sussex, Falmer, UK
| | - Richard J Hazell
- Department of Ecology and Evolution, University of Sussex, Falmer, UK
| | - Michael G Head
- Clinical Informatics Research Unit, Faculty of Medicine, University of Southampton, Southampton, UK
| | - Joao Inacio
- School of Applied Sciences, Cockcroft Building, University of Brighton, Brighton, UK
| | - Mavis Jimbudo
- New Guinea Binatang Research Centre, Madang, Papua New Guinea
| | - Christopher Iain Jones
- Medical Statistics, Brighton and Sussex Medical School, Watson Building, University of Brighton, Falmer, UK
| | - Moses Laman
- Papua New Guinea Institute of Medical Research, Port Moresby, Papua New Guinea
| | - Hayley MacGregor
- Health and Nutrition Research Cluster, Institute of Development Studies, Falmer, UK
| | - Vojtech Novotny
- Department of Zoology, Faculty of Science, University of South Bohemia in Ceske Budejovice, Ceske Budejovice, Czech Republic
- Institute of Entomology, Biology Centre, Czech Academy of Sciences, Ceske Budejovice, Czech Republic
| | - Mika Peck
- Department of Ecology and Evolution, University of Sussex, Falmer, UK
| | - Jonah Philip
- New Guinea Binatang Research Centre, Madang, Papua New Guinea
- Wanang Conservation Area, Wanang, Papua New Guinea
| | - Jason Paliau
- New Guinea Binatang Research Centre, Madang, Papua New Guinea
- Department of Environmental Engineering & Renewable Energy, School of Environment and Climate Change, Papua New Guinea University of Natural Resources and Environment, Kokopo, Papua New Guinea
| | - William Pomat
- PNG Institute of Medical Research, Goroka, Papua New Guinea
| | - Jessica A Stockdale
- Department of Primary Care and Public Health, Brighton and Sussex Medical School, Watson Building, University of Brighton, Falmer, UK
| | - Shen Sui
- New Guinea Binatang Research Centre, Madang, Papua New Guinea
| | - Alan J Stewart
- Department of Ecology and Evolution, University of Sussex, Falmer, UK
| | - Ruma Umari
- New Guinea Binatang Research Centre, Madang, Papua New Guinea
- Wanang Conservation Area, Wanang, Papua New Guinea
| | - Stephen L Walker
- Faculty of Infectious and Tropical Diseases, London School of Hygiene & Tropical Medicine, London, UK
- Hospital for Tropical Diseases, and Department of Dermatology, University College London Hospitals NHS Foundation Trust, London, UK
| | - Jackie A Cassell
- Department of Primary Care and Public Health, Brighton and Sussex Medical School, Watson Building, University of Brighton, Falmer, UK
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Kasbergen LMR, Nieuwenhuijse DF, de Bruin E, Sikkema RS, Koopmans MPG. The increasing complexity of arbovirus serology: An in-depth systematic review on cross-reactivity. PLoS Negl Trop Dis 2023; 17:e0011651. [PMID: 37738270 PMCID: PMC10550177 DOI: 10.1371/journal.pntd.0011651] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 10/04/2023] [Accepted: 09/10/2023] [Indexed: 09/24/2023] Open
Abstract
Diagnosis of arbovirus infection or exposure by antibody testing is becoming increasingly difficult due to global expansion of arboviruses, which induce antibodies that may (cross-)react in serological assays. We provide a systematic review of the current knowledge and knowledge gaps in differential arbovirus serology. The search included Medline, Embase and Web of Science databases and identified 911 publications which were reduced to 102 after exclusion of studies not providing data on possible cross-reactivity or studies that did not meet the inclusion criteria regarding confirmation of virus exposure of reference population sets. Using a scoring system to further assess quality of studies, we show that the majority of the selected papers (N = 102) provides insufficient detail to support conclusions on specificity of serological outcomes with regards to elucidating antibody cross-reactivity. Along with the lack of standardization of assays, metadata such as time of illness onset, vaccination, infection and travel history, age and specificity of serological methods were most frequently missing. Given the critical role of serology for diagnosis and surveillance of arbovirus infections, better standards for reporting, as well as the development of more (standardized) specific serological assays that allow discrimination between exposures to multiple different arboviruses, are a large global unmet need.
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Affiliation(s)
| | - David F. Nieuwenhuijse
- Department of Viroscience, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Erwin de Bruin
- Department of Viroscience, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Reina S. Sikkema
- Department of Viroscience, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Marion P. G. Koopmans
- Department of Viroscience, Erasmus University Medical Center, Rotterdam, The Netherlands
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Frank JC, Song BH, Lee YM. Mice as an Animal Model for Japanese Encephalitis Virus Research: Mouse Susceptibility, Infection Route, and Viral Pathogenesis. Pathogens 2023; 12:pathogens12050715. [PMID: 37242385 DOI: 10.3390/pathogens12050715] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2023] [Revised: 05/09/2023] [Accepted: 05/09/2023] [Indexed: 05/28/2023] Open
Abstract
Japanese encephalitis virus (JEV), a zoonotic flavivirus, is principally transmitted by hematophagous mosquitoes, continually between susceptible animals and incidentally from those animals to humans. For almost a century since its discovery, JEV was geographically confined to the Asia-Pacific region with recurrent sizable outbreaks involving wildlife, livestock, and people. However, over the past decade, it has been detected for the first time in Europe (Italy) and Africa (Angola) but has yet to cause any recognizable outbreaks in humans. JEV infection leads to a broad spectrum of clinical outcomes, ranging from asymptomatic conditions to self-limiting febrile illnesses to life-threatening neurological complications, particularly Japanese encephalitis (JE). No clinically proven antiviral drugs are available to treat the development and progression of JE. There are, however, several live and killed vaccines that have been commercialized to prevent the infection and transmission of JEV, yet this virus remains the main cause of acute encephalitis syndrome with high morbidity and mortality among children in the endemic regions. Therefore, significant research efforts have been directed toward understanding the neuropathogenesis of JE to facilitate the development of effective treatments for the disease. Thus far, multiple laboratory animal models have been established for the study of JEV infection. In this review, we focus on mice, the most extensively used animal model for JEV research, and summarize the major findings on mouse susceptibility, infection route, and viral pathogenesis reported in the past and present, and discuss some unanswered key questions for future studies.
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Affiliation(s)
- Jordan C Frank
- Department of Animal, Dairy, and Veterinary Sciences, College of Agriculture and Applied Sciences, Utah State University, Logan, UT 84322, USA
| | - Byung-Hak Song
- Department of Animal, Dairy, and Veterinary Sciences, College of Agriculture and Applied Sciences, Utah State University, Logan, UT 84322, USA
| | - Young-Min Lee
- Department of Animal, Dairy, and Veterinary Sciences, College of Agriculture and Applied Sciences, Utah State University, Logan, UT 84322, USA
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10
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Damtew YT, Tong M, Varghese BM, Anikeeva O, Hansen A, Dear K, Zhang Y, Morgan G, Driscoll T, Capon T, Bi P. Effects of high temperatures and heatwaves on dengue fever: a systematic review and meta-analysis. EBioMedicine 2023; 91:104582. [PMID: 37088034 PMCID: PMC10149186 DOI: 10.1016/j.ebiom.2023.104582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 04/03/2023] [Accepted: 04/06/2023] [Indexed: 04/25/2023] Open
Abstract
BACKGROUND Studies have shown that dengue virus transmission increases in association with ambient temperature. We performed a systematic review and meta-analysis to assess the effect of both high temperatures and heatwave events on dengue transmission in different climate zones globally. METHODS A systematic literature search was conducted in PubMed, Scopus, Embase, and Web of Science from January 1990 to September 20, 2022. We included peer reviewed original observational studies using ecological time series, case crossover, or case series study designs reporting the association of high temperatures and heatwave with dengue and comparing risks over different exposures or time periods. Studies classified as case reports, clinical trials, non-human studies, conference abstracts, editorials, reviews, books, posters, commentaries; and studies that examined only seasonal effects were excluded. Effect estimates were extracted from published literature. A random effects meta-analysis was performed to pool the relative risks (RRs) of dengue infection per 1 °C increase in temperature, and further subgroup analyses were also conducted. The quality and strength of evidence were evaluated following the Navigation Guide systematic review methodology framework. The review protocol has been registered in the International Prospective Register of Systematic Reviews (PROSPERO). FINDINGS The study selection process yielded 6367 studies. A total of 106 studies covering more than four million dengue cases fulfilled the inclusion criteria; of these, 54 studies were eligible for meta-analysis. The overall pooled estimate showed a 13% increase in risk of dengue infection (RR = 1.13; 95% confidence interval (CI): 1.11-1.16, I2 = 98.0%) for each 1 °C increase in high temperatures. Subgroup analyses by climate zones suggested greater effects of temperature in tropical monsoon climate zone (RR = 1.29, 95% CI: 1.11-1.51) and humid subtropical climate zone (RR = 1.20, 95% CI: 1.15-1.25). Heatwave events showed association with an increased risk of dengue infection (RR = 1.08; 95% CI: 0.95-1.23, I2 = 88.9%), despite a wide confidence interval. The overall strength of evidence was found to be "sufficient" for high temperatures but "limited" for heatwaves. Our results showed that high temperatures increased the risk of dengue infection, albeit with varying risks across climate zones and different levels of national income. INTERPRETATION High temperatures increased the relative risk of dengue infection. Future studies on the association between temperature and dengue infection should consider local and regional climate, socio-demographic and environmental characteristics to explore vulnerability at local and regional levels for tailored prevention. FUNDING Australian Research Council Discovery Program.
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Affiliation(s)
- Yohannes Tefera Damtew
- School of Public Health, The University of Adelaide, Adelaide, South Australia, 5005, Australia; College of Health and Medical Sciences, Haramaya University, P.O.BOX 138, Dire Dawa, Ethiopia.
| | - Michael Tong
- National Centre for Epidemiology and Population Health, ANU College of Health and Medicine, The Australian National University, Canberra ACT, 2601, Australia.
| | - Blesson Mathew Varghese
- School of Public Health, The University of Adelaide, Adelaide, South Australia, 5005, Australia.
| | - Olga Anikeeva
- School of Public Health, The University of Adelaide, Adelaide, South Australia, 5005, Australia.
| | - Alana Hansen
- School of Public Health, The University of Adelaide, Adelaide, South Australia, 5005, Australia.
| | - Keith Dear
- School of Public Health, The University of Adelaide, Adelaide, South Australia, 5005, Australia.
| | - Ying Zhang
- School of Public Health, Faculty of Medicine and Health, The University of Sydney, New South Wales, 2006, Australia.
| | - Geoffrey Morgan
- School of Public Health, Faculty of Medicine and Health, The University of Sydney, New South Wales, 2006, Australia.
| | - Tim Driscoll
- School of Public Health, Faculty of Medicine and Health, The University of Sydney, New South Wales, 2006, Australia.
| | - Tony Capon
- Monash Sustainable Development Institute, Monash University, Melbourne, Victoria, Australia.
| | - Peng Bi
- School of Public Health, The University of Adelaide, Adelaide, South Australia, 5005, Australia.
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11
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Scott J, Emeto TI, Melrose W, Warner J, Rush C. Seroepidemiology of Strongyloides spp. Infection in Balimo, Western Province, Papua New Guinea. Am J Trop Med Hyg 2023; 108:346-352. [PMID: 36572010 PMCID: PMC9896327 DOI: 10.4269/ajtmh.22-0408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Accepted: 10/12/2022] [Indexed: 12/27/2022] Open
Abstract
Strongyloidiasis in Papua New Guinea (PNG) is poorly understood. There have been limited surveys describing the levels of endemicity in some regions of PNG, but in the Western Province, its occurrence and level of burden are unknown. This study aimed to determine the seroepidemiology of Strongyloides spp. seropositivity within a community located in the Balimo region of the Western Province. Plasma samples were collected from 120 adult participants and were subjected to anti-IgG Strongyloides spp. serological testing. Logistical regression analyses were performed to identify relationships between strongyloidiasis and attributes of sociodemography. In this cross-sectional cohort study, 22.5% (27/120; 95% CI: 15.9-30.8%) of participants were seropositive for strongyloidiasis. Participants with higher body mass indices were less likely to be seropositive for Strongyloides spp. infection (odds ratio [OR] = 0.85, P value = 0.008), and in the multivariable analysis, increasing units of age (adjusted OR [aOR] = 0.93, P value = 0.048) and participants ≤ 40 years old were associated with a decreased likelihood of Strongyloides spp. seropositivity (aOR = 0.07, P value = 0.034). The results from this study indicate that the occurrence of strongyloidiasis is high in the Western Province, PNG, and age is a determining factor of seroreactivity. This study provides evidence of endemic strongyloidiasis in this community and raises questions as to the impact of this neglected disease and other intestinal parasites on disease burden and comorbidities.
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Affiliation(s)
- Jessica Scott
- College of Public Health, Medical and Veterinary Sciences, James Cook University, Townsville, Australia
- Australian Institute of Tropical Health and Medicine, James Cook University, Townsville, Australia
| | - Theophilus I. Emeto
- College of Public Health, Medical and Veterinary Sciences, James Cook University, Townsville, Australia
- Australian Institute of Tropical Health and Medicine, James Cook University, Townsville, Australia
- World Health Organization Collaborating Centre for Vector-Borne and Neglected Tropical Diseases, James Cook University, Townsville, Australia
| | - Wayne Melrose
- College of Public Health, Medical and Veterinary Sciences, James Cook University, Townsville, Australia
| | - Jeffrey Warner
- College of Public Health, Medical and Veterinary Sciences, James Cook University, Townsville, Australia
- Australian Institute of Tropical Health and Medicine, James Cook University, Townsville, Australia
| | - Catherine Rush
- College of Public Health, Medical and Veterinary Sciences, James Cook University, Townsville, Australia
- Australian Institute of Tropical Health and Medicine, James Cook University, Townsville, Australia
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12
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Raw C, Traub RJ, Zendejas-Heredia PA, Stevenson M, Wiethoelter A. A systematic review and meta-analysis of human and zoonotic dog soil-transmitted helminth infections in Australian Indigenous communities. PLoS Negl Trop Dis 2022; 16:e0010895. [PMID: 36279298 PMCID: PMC9632820 DOI: 10.1371/journal.pntd.0010895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 11/03/2022] [Accepted: 10/14/2022] [Indexed: 11/06/2022] Open
Abstract
Soil-transmitted helminths (STH) infect 1.5 billion people and countless animals worldwide. In Australian Indigenous communities, STH infections have largely remained endemic despite control efforts, suggesting reservoirs of infection may exist. Dogs fulfil various important cultural, social and occupational roles in Australian Indigenous communities and are populous in these settings. Dogs may also harbour zoonotic STHs capable of producing morbidity and mortality in dogs and humans. This review provides an overview of human and zoonotic STH infections, identifies the Australian Indigenous locations affected and the parasite species and hosts involved. The meta-analysis provides estimates of individual study and pooled true prevalence of STH infections in Australian Indigenous communities and identifies knowledge gaps for further research on zoonotic or anthroponotic potential. A systematic literature search identified 45 eligible studies documenting the presence of Strongyloides stercoralis, Trichuris trichiura, Ancylostoma caninum, Ancylostoma duodenale, Ancylostoma ceylanicum, undifferentiated hookworm, and Ascaris lumbricoides. Of these studies, 26 were also eligible for inclusion in meta-analysis to establish true prevalence in the light of imperfect diagnostic test sensitivity and specificity by Rogan-Gladen and Bayesian methods. These studies revealed pooled true prevalence estimates of 18.9% (95% CI 15.8–22.1) for human and canine S. stercoralis infections and 77.3% (95% CI 63.7–91.0) for canine A. caninum infections indicating continued endemicity, but considerably more heterogenous pooled estimates for canine A. ceylanicum infections, and A. duodenale, undifferentiated hookworm and T. trichiura in humans. This review suggests that the prevalence of STHs in Australian Indigenous communities has likely been underestimated, principally based on imperfect diagnostic tests. Potential misclassification of hookworm species in humans and dogs due to outdated methodology, also obscures this picture. High-quality contemporary studies are required to establish current true prevalence of parasite species in all relevant hosts to guide future policy development and control decisions under a culturally sound One Health framework. Soil-transmitted helminths include hookworms, threadworms, whipworms and roundworms. These worms may infect different hosts including humans and dogs, and some species are zoonotic, meaning that they are able to transmit between animals and humans. In many Australian Indigenous communities, people remain infected with these worms at high rates compared to other parts of the country despite various control strategies. Resource and health literacy inequalities are primary drivers for these differences. However, the potential for dogs to act as reservoirs for zoonotic worm infections in humans must also be considered. For this reason, it’s important to create a clear picture of the level of infection by location and host. Given that tests used to establish prevalence can produce false positive or negative results, we performed a meta-analysis allowing comparison of true prevalence estimates by location and host, regardless of the test used. This review suggests that threadworm and dog hookworm remain endemic in Australian Indigenous communities, though a gap exists to accurately inform the prevalence of the other worms. It also highlights the need for One Health strategies in research, policy and control where humans, all animal hosts and the environment are considered in a culturally relevant way.
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Affiliation(s)
- Cameron Raw
- Faculty of Veterinary and Agricultural Sciences, University of Melbourne, Parkville, Victoria, Australia
- * E-mail:
| | - Rebecca J. Traub
- Faculty of Veterinary and Agricultural Sciences, University of Melbourne, Parkville, Victoria, Australia
| | - Patsy A. Zendejas-Heredia
- Faculty of Veterinary and Agricultural Sciences, University of Melbourne, Parkville, Victoria, Australia
| | - Mark Stevenson
- Faculty of Veterinary and Agricultural Sciences, University of Melbourne, Parkville, Victoria, Australia
| | - Anke Wiethoelter
- Faculty of Veterinary and Agricultural Sciences, University of Melbourne, Parkville, Victoria, Australia
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13
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Freeman M, Kc M, Amateau SK. Identification of Ascaris lumbricoides Eggs within the Pancreas Using Endoscopic Ultrasound. Am J Trop Med Hyg 2022; 107:tpmd220145. [PMID: 36067992 PMCID: PMC9651514 DOI: 10.4269/ajtmh.22-0145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Accepted: 06/20/2022] [Indexed: 11/07/2022] Open
Affiliation(s)
- Morgan Freeman
- Department of Medicine, University of Minnesota, Minneapolis, Minnesota
| | - Mandip Kc
- Division of Gastroenterology, Hepatology and Nutrition, Department of Medicine, Minneapolis, Minnesota
| | - Stuart K. Amateau
- Division of Gastroenterology, Hepatology and Nutrition, Department of Medicine, Minneapolis, Minnesota
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14
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Alam W, Mobayed T, Younis N, Zarif R, Bizri N, Tamim H, Musharrafieh U, Bizri AR. Neglected Tropical Diseases in Lebanon. Acta Parasitol 2022; 67:809-819. [PMID: 35113340 PMCID: PMC8811347 DOI: 10.1007/s11686-021-00510-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Accepted: 12/09/2021] [Indexed: 11/25/2022]
Abstract
INTRODUCTION Neglected tropical diseases (NTDs) are highly endemic and distributed within the Middle East and North Africa (MENA) region, affecting an estimated 65 million people. Lebanon suffers from several NTDs as they are either endemic in the country or imported via expats residing in endemic regions, refugees, and foreign labor force. The Syrian crisis and the displacement of refugees to Lebanon have made the country the largest host of refugees per capita right after the Syrian crisis in 2011, peaking in the year of 2013. Additionally, foreign labor in Lebanon come from different countries in Africa and Asia that are endemic with certain NTDs. The Lebanese diaspora is approximately twice the number of those residing in the country and is distributed throughout the continents carrying the risk of importing new NTDs. MATERIALS AND METHODS A descriptive study about the prevalence of NTDs in Lebanon, their distribution, and factors contributing to spread was performed. The Lebanese Ministry of Public Health (LMPH) database regarding reportable transmissible diseases was reviewed for reportable NTDs between 2002 and 2020 in relation to age, gender, prevalence, and geographical distribution. The medical literature was searched using several engines looking for all reports about NTDs in Lebanon, those relevant to regions hosting Lebanese diaspora, and countries where the refugees and migrant workers came from. RESULTS Only leishmaniasis, leprosy, echinococcosis, schistosomiasis, and rabies are mandatorily reportable NTDs by the LMPH. Additionally, case reports about fasciolosis, ascaridiosis, and Dengue were reported from Lebanon. The presence of the Syrian refugees in the country affected the prevalence of leishmaniasis and rabies. The most prevalent NTD in Lebanon is cutaneous leishmaniasis. The Lebanese diaspora reside mainly in South America, Africa, and in some Arab states known to be endemic with certain NTDs. CONCLUSION Little information is known about NTDs in Lebanon. The country is at an increased risk of experiencing several new NTDs due to refugee influx, foreign labor, economic crisis, and ever-growing number of Lebanese seeking work opportunities abroad. More information is needed to assess the true burden of NTDs in Lebanon and the future steps to contain and mitigate their effects.
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Affiliation(s)
- Walid Alam
- Department of Oncology, Maidstone Hospital, Maidstone, Kent UK
- Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon
| | - Tala Mobayed
- Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon
| | - Nour Younis
- Faculty of Medicine, American University of Beirut, Hamra, Beirut, Lebanon
| | - Rana Zarif
- Faculty of Medicine, American University of Beirut, Hamra, Beirut, Lebanon
| | - Nazih Bizri
- Faculty of Medicine, University of Balamand, Beirut, Lebanon
| | - Hani Tamim
- Biostatistics Unit, Department of Internal Medicine, Clinical Research Institute, American University of Beirut, Beirut, Lebanon
| | - Umayya Musharrafieh
- Department of Family Medicine, American University of Beirut Medical Center, Beirut, Lebanon
| | - Abdul Rahman Bizri
- Division of Infectious Diseases, Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon
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15
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Can ivermectin mass drug administrations to control scabies also reduce skin and soft tissue infections? Hospitalizations and primary care presentations lower after a large-scale trial in Fiji. THE LANCET REGIONAL HEALTH - WESTERN PACIFIC 2022; 22:100454. [PMID: 35462879 PMCID: PMC9018377 DOI: 10.1016/j.lanwpc.2022.100454] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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16
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Almaw A, Berhan A, Solomon Y, Malkamu B, Eyayu T, Workineh L, Mekete G, Yayehrad AT. Balantidium coli; Rare and Accidental Finding in the Urine of Pregnant Woman: Case Report. Int Med Case Rep J 2022; 15:105-109. [PMID: 35345500 PMCID: PMC8957295 DOI: 10.2147/imcrj.s355536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Accepted: 03/12/2022] [Indexed: 11/30/2022] Open
Abstract
Background Balantidium coli is a ciliated protozoan parasite, which causes intestinal and extraintestinal infections in humans. It is transmitted feco-orally by ingesting infective cysts with food and water. Urinary balantidiasis may occur through contamination (direct spread from the anal area), secondarily to rectovaginal fistula and following immune suppression. Data about cases of urinary balantidiasis are rare in the world. Currently, there are no documented reports of urinary balantidiasis in Ethiopia. As our understanding, there are only eleven documented reports of urinary balantidiasis globally. However, cases of urinary balantidiasis among pregnant women have not been documented yet. The aim of this report is to alarm health professionals for considering the occurrence of such rare cases and conduct diagnosis. Case Presentation A 24-year old pregnant woman was admitted due to severe preeclampsia and preterm delivery at Debre Tabor Comprehensive Specialized Hospital, gynecology ward. Her urine was presented to inpatient laboratory for routine urinalysis. We detected unusual and ciliated parasite from her urine sediment characterized by its active and rotary motility through its cilia and possessing macro- and micro-nuclei, several food vacuoles and ingested red blood cells inside the cytoplasm. Hematuria, many white blood cells and epithelial cells were also detected from the urine sediment, which suggests genito-urinary tract infection due to this parasite. This rare parasite finding was confirmed to be B. coli. Conclusion The route of transmission and extraintestinal existence from this woman’s urine was unclear. It might be due to feco-oral transmission and spread to the genitourinary tract through direct anal contact. Moreover, it might be associated with immune suppression as she is pregnant woman.
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Affiliation(s)
- Andargachew Almaw
- Department of Medical Laboratory Science, Debre Tabor University, Debre Tabor, Ethiopia
| | - Ayenew Berhan
- Department of Medical Laboratory Science, Debre Tabor University, Debre Tabor, Ethiopia
| | - Yenealem Solomon
- Department of Medical Laboratory Science, Debre Tabor University, Debre Tabor, Ethiopia
| | - Birhanemaskal Malkamu
- Department of Medical Laboratory Science, Debre Tabor University, Debre Tabor, Ethiopia
| | - Tahir Eyayu
- Department of Medical Laboratory Science, Debre Tabor University, Debre Tabor, Ethiopia
| | - Lemma Workineh
- Department of Medical Laboratory Science, Debre Tabor University, Debre Tabor, Ethiopia
| | - Getachew Mekete
- Department of Anesthesia, Debre Tabor University, Debre Tabor, Ethiopia
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Mitchell E, Kelly-Hanku A, Krentel A, Romani L, Robinson LJ, Vaz Nery S, Kaldor J, Steer AC, Bell S. Community perceptions and acceptability of mass drug administration for the control of neglected tropical diseases in Asia-Pacific countries: A systematic scoping review of qualitative research. PLoS Negl Trop Dis 2022; 16:e0010215. [PMID: 35275932 PMCID: PMC8916618 DOI: 10.1371/journal.pntd.0010215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Accepted: 01/29/2022] [Indexed: 11/29/2022] Open
Abstract
Background Preventative chemotherapy and mass drug administration have been identified as effective strategies for the prevention, treatment, control and elimination of several NTDs in the Asia-Pacific region. Qualitative research can provide in-depth insight into the social dynamics and processes underlying effective implementation of and adherence to mass drug administration programs. This scoping review examines published qualitative literature to examine factors influencing community perceptions and acceptability of mass drug administration approaches to control NTDs in the Asia-Pacific region. Methodology Twenty-four peer reviewed published papers reporting qualitative data from community members and stakeholders engaged in the implementation of mass drug administration programs were identified as eligible for inclusion. Findings This systematic scoping review presents available data from studies focussing on lymphatic filariasis, soil-transmitted helminths and scabies in eight national settings (India, Indonesia, Philippines, Bangladesh, Laos, American Samoa, Papua New Guinea, Fiji). The review highlights the profoundly social nature of individual, interpersonal and institutional influences on community perceptions of willingness to participate in mass drug administration programs for control of neglected tropical diseases (NTD). Future NTD research and control efforts would benefit from a stronger qualitative social science lens to mass drug administration implementation, a commitment to understanding and addressing the social and structural determinants of NTDs and NTD control in complex settings, and efforts to engage local communities as equal partners and experts in the co-design of mass drug administration and other efforts to prevent, treat, control and eliminate NTDs. Conclusion For many countries in the Asia-Pacific region, the “low hanging fruit has been picked” in terms of where mass drug administration has worked and transmission has been stopped. The settings that remain–such as remote areas of Fiji and Papua New Guinea, or large, highly populated, multi-cultural urban settings in India and Indonesia–present huge challenges going forward. Qualitative research can provide in-depth insight into the social dynamics and processes underlying effective implementation of and adherence to mass drug administration programs. This scoping review examines published qualitative literature to examine factors influencing community perceptions and acceptability of mass drug administration approaches to control neglected tropical diseases (NTDs) in the Asia-Pacific region. Our analyses highlight the profoundly social nature of individual, interpersonal and institutional influences on community perceptions of willingness to participate in mass drug administration programs for control of NTDs. For many countries in the Asia-Pacific region, the “low hanging fruit has been picked” in terms of where mass drug administration has worked and transmission has been stopped. The settings that remain–e.g. remote areas of Fiji and Papua New Guinea, or large, highly populated, multi-cultural urban settings in India and Indonesia–present huge challenges going forward. Future NTD research and control efforts would benefit from a stronger qualitative social science lens to mass drug administration implementation, a commitment to understanding the socio-structural determinants of NTDs and NTD control in complex settings, and engaging local communities as equal partners and experts in the co-design of mass drug administration and other efforts to prevent, treat, control and eliminate NTDs.
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Affiliation(s)
- Elke Mitchell
- Kirby Institute, UNSW Sydney, Sydney, Australia
- * E-mail:
| | - Angela Kelly-Hanku
- Kirby Institute, UNSW Sydney, Sydney, Australia
- Papua New Guinea Institute of Medical Research, Goroka, Papua New Guinea
| | - Alison Krentel
- Bruyère Research Institute, Ottawa, Canada
- School of Epidemiology and Public Health, University of Ottawa, Ottawa, Canada
| | - Lucia Romani
- Kirby Institute, UNSW Sydney, Sydney, Australia
- Tropical Diseases Group, Murdoch Children’s Research Institute, Melbourne, Australia
| | - Leanne J. Robinson
- Papua New Guinea Institute of Medical Research, Goroka, Papua New Guinea
- Burnet Institute, Melbourne, Australia
- School of Public Health and Preventative Medicine, Monash University, Melbourne, Australia
| | | | - John Kaldor
- Kirby Institute, UNSW Sydney, Sydney, Australia
| | - Andrew C. Steer
- Tropical Diseases Group, Murdoch Children’s Research Institute, Melbourne, Australia
- Department of Paediatrics, University of Melbourne, Melbourne, Australia
- Melbourne Children’s Global Health, Melbourne Children’s Campus, The Royal Children’s Hospital, Melbourne, Australia
| | - Stephen Bell
- UQ Poche Centre for Indigenous Health, The University of Queensland, St Lucia, Australia
- School of Public Health, The University of Queensland, St Lucia, Australia
- Centre for Social Research in Health, UNSW Sydney, Sydney, Australia
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18
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Almanfaluthi M, Widodo S, Suttiprapa S, Wongsaroj T, Sripa B. The burden of opisthorchiasis and leptospirosis in Thailand: A nationwide syndemic analysis. Acta Trop 2022; 226:106227. [PMID: 34752782 DOI: 10.1016/j.actatropica.2021.106227] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 10/29/2021] [Accepted: 10/31/2021] [Indexed: 11/30/2022]
Abstract
Opisthorchiasis, caused by the foodborne trematode parasite Opisthorchis viverrini, is co-endemic with leptospirosis in the Greater Mekong Subregion. Socio-economic determinants, occupational risk factors, and reservoir hosts interact with the diseases in the threat to human health, but the situation has not been explored. We, therefore, studied the interaction between the diseases and their associated risks using a syndemic approach with nationwide data for Thailand. Methods included Bayesian mapping, principal component analysis (PCA), and nested correlation analysis to analyze the data for 2009 and 2014. Bayesian mapping demonstrates that opisthorchiasis acts in a synergistic manner to massively alter the risk of leptospirosis at the provincial level, particularly in areas of opisthorchiasis endemicity in Northeast Thailand. Socio-economic and occupational factors significantly influence the disease syndemic with moderate effect sizes of -0.4 and 0.5, respectively (P<0.001). These effects are most remarkable in the northeastern region, which has not only the highest poverty level but also the highest proportion of occupational risk (P<0.001). Cats and dogs play crucial roles in maintaining the syndemic (r-value 7 and 6 with P<0.001). The study shows that opisthorchiasis and leptospirosis become syndemic, especially in North-East, Thailand. Socio-economic and occupational variables are positively syndemic as they are representative of neglected tropical diseases. The role of reservoir hosts underlines the value of an interdisciplinary approach, such as One Health for Sustainability Disease Control.
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Affiliation(s)
- Muhammad Almanfaluthi
- WHO Collaborating Centre for Research and Control of Opisthorchiasis (Southeast Asian Liver Fluke Disease), Faculty of Medicine, Khon Kaen, Thailand; Faculty of Medicine, University of Muhammadiyah Purwokerto, Indonesia
| | - Stefani Widodo
- WHO Collaborating Centre for Research and Control of Opisthorchiasis (Southeast Asian Liver Fluke Disease), Faculty of Medicine, Khon Kaen, Thailand; Faculty of Medicine, University of Muhammadiyah Purwokerto, Indonesia
| | - Sutas Suttiprapa
- WHO Collaborating Centre for Research and Control of Opisthorchiasis (Southeast Asian Liver Fluke Disease), Faculty of Medicine, Khon Kaen, Thailand; Tropical Medicine Graduate Program, Faculty of Medicine, Khon Kaen University
| | | | - Banchob Sripa
- WHO Collaborating Centre for Research and Control of Opisthorchiasis (Southeast Asian Liver Fluke Disease), Faculty of Medicine, Khon Kaen, Thailand; Department of Pathology, Faculty of Medicine, Khon Kaen, Thailand.
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Du M, Jing W, Liu M, Liu J. The Global Trends and Regional Differences in Incidence of Dengue Infection from 1990 to 2019: An Analysis from the Global Burden of Disease Study 2019. Infect Dis Ther 2021; 10:1625-1643. [PMID: 34173959 PMCID: PMC8234762 DOI: 10.1007/s40121-021-00470-2] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 05/25/2021] [Indexed: 11/25/2022] Open
Abstract
INTRODUCTION Dengue, as a neglected tropical disease, brings a heavy socioeconomic burden. To provide tailored global prevention strategies, we analyzed the global trends and regional differences in incidence of dengue infection from 1990 to 2019. METHODS We obtained data on annual dengue episodes and incidence rates, which reflected the epidemic status of dengue infection from the 2019 Global Burden of Disease (GBD) Study. The changes in dengue episodes and estimated annual percentage changes (EAPCs) of the age-standardized incidence rate (ASR) were calculated to quantify the temporal trends of dengue infection. RESULTS Globally, dengue ASR increased by 1.70% (95% CI 1.62%-1.78%) per year from 1990 to 2011; subsequently, it decreased by 0.41% (95% CI 0.20%-0.62%) per year from 2011 to 2019. However, the global number of dengue episodes increased steadily by 85.47% from 30.67 million in 1990 to 56.88 million in 2019. Against the global trend of decreasing ASR from 2011 to 2019, an increasing trend was reported in Oceania (EAPC 11.01, 95% CI 8.79-13.27), East Asia (EAPC 4.84, 95% CI 2.70-7.03) and Southeast Asia (EAPC 0.38, 95% CI 0.13-0.62). For socio-demographic index (SDI) regions, ASR continued to have an increasing trend in the middle (EAPC 0.26, 95% CI 0.07-0.45) and high-middle (EAPC 1.70, 95% CI 0.98-2.42) SDI regions from 2011 to 2019. In contrast to the global peak age of dengue incidence rate (10 to 25 years), the dengue incidence rate of older people (> 65 years) was higher than in other age groups in low and low-middle SDI regions. Additionally, the proportions of dengue episodes in the > 70-year-old age group increased in 2019 (using the baseline in 1990 or 2011) in most GBD regions. CONCLUSIONS Global dengue episodes have increased tremendously in 3 decades. Although global dengue ASR decreased in the last decade, it is still increasing in hyperendemic regions including Oceania, East Asia and Southeast Asia, and also in the middle and high-middle SDI regions. More attention should be paid to the elderly because of the higher dengue incidence rate among them in low and low-middle SDI regions and the increased proportions of dengue episodes among the elderly in most GBD regions. Therefore, more efforts should be undertaken to develop targeted prevention strategies for crucial regions and older populations.
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Affiliation(s)
- Min Du
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, No.38, Xueyuan Road, Haidian District, Beijing, 100191, China
| | - Wenzhan Jing
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, No.38, Xueyuan Road, Haidian District, Beijing, 100191, China
| | - Min Liu
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, No.38, Xueyuan Road, Haidian District, Beijing, 100191, China.
| | - Jue Liu
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, No.38, Xueyuan Road, Haidian District, Beijing, 100191, China.
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Tiruneh A, Zemene E, Mekonnen Z. Strongyloidiasis: the most neglected tropical disease in Ethiopia. Infect Dis Poverty 2021; 10:65. [PMID: 33962697 PMCID: PMC8106120 DOI: 10.1186/s40249-021-00851-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Accepted: 04/22/2021] [Indexed: 11/10/2022] Open
Abstract
Background Strongyloidiasis is the most neglected of the neglected tropical diseases (NTDs). The aim of this commentary is to describe the possible reasons why strongyloidiasis is so overlooked in Ethiopia, and shed light on better ways of control and elimination of the disease. Main body This commentary highlights three points why strongyloidiasis is the most neglected of the NTDs in Ethiopia. Firstly, lack of clear category within the NTDs resulted in omission of the disease from reports, intervention programs, and preventive chemotherapy guidelines. Secondly, magnitude of the disease is underestimated due to paucity of studies and low sensitivity of diagnostic methods coupled with asymptomatic nature of most of the infections. Finally, ivermectin (the drug of choice for treatment of strongyloidiasis) is not in use for control of the other soil-transmitted helminthiasis, nor is there ivermectin mass drug administration for control of strongyloidiasis. This might have created gap in control and elimination of the disease in Ethiopia and possibly elsewhere. Conclusion Strongyloidiasis appears to be the most neglected of the NTDs mainly due to nature of the infection, low sensitivity of the routine diagnostic tools and it’s exclusion from strategic plans and intervention programs. Moreover, studies on strongyloidiasis should use sensitive diagnostic tools. Strongyloidiasis control and elimination programs should be based on reliable evidence of epidemiology of the disease in Ethiopia. Graphic Abstract ![]()
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Affiliation(s)
- Abebaw Tiruneh
- School of Medical Laboratory Sciences, Institute of Health, Jimma University, Jimma, Ethiopia.
| | - Endalew Zemene
- School of Medical Laboratory Sciences, Institute of Health, Jimma University, Jimma, Ethiopia
| | - Zeleke Mekonnen
- School of Medical Laboratory Sciences, Institute of Health, Jimma University, Jimma, Ethiopia
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21
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Giarratana F, Nalbone L, Napoli E, Lanzo V, Panebianco A. Prevalence of Balantidium coli (Malmsten, 1857) infection in swine reared in South Italy: A widespread neglected zoonosis. Vet World 2021; 14:1044-1049. [PMID: 34083958 PMCID: PMC8167529 DOI: 10.14202/vetworld.2021.1044-1049] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Accepted: 03/16/2021] [Indexed: 11/30/2022] Open
Abstract
Background and Aim: Balantidiasis, caused by Balantidium coli (syn. Neobalantidium coli or B. coli), represents a neglected parasitic infection of zoonotic significance affecting a variety of hosts, including domestic pigs that are the main reservoir. B. coli has a direct life cycle with a fecal-oral route transmission that occurs mainly by the ingestion of food and water contaminated with cysts. The ingestion of meat contaminated during inappropriate slaughtering processes may represent a new potential route of transmission. Only a few studies have investigated the prevalence of B. coli in domestic pigs in Italy, despite its high prevalence and zoonotic significance. This study aimed to improve the knowledge on B. coli prevalence in domestic swine reared both in intensive and “en plein air” breeding systems in the south of Italy. Materials and Methods: The infection rate of B. coli in pigs bred in 15 different pig farms and regularly slaughtered in South Italy, in the Calabria region, was investigated. From 2017 to 2019, 177 terminal parts of the rectums of pigs, of which 91 commercial hybrids and 86 autochthonous (Nero Calabrese), reared, respectively, in intensive and “en plein air” breeding system, were tested for parasite detection. After the slaughtering, the terminal part of the rectum was sampled and transported to the laboratories and immediately processed. For the detection of trophozoites, fresh smears of feces were examined at light microscopy. Moreover, flotation was performed using a sodium chloride solution, then smears of feces were dispersed on microscope slides and examined at light microscopy. The observed parasites were identified at the species level using morphological characteristics. Results: B. coli was detected in a total of 83 (i.e., 46.89%) pigs, with a significantly higher prevalence (p<0.0001) found in commercial hybrid (i.e., 59/91-64.84%) pigs rather than in autochthonous ones (i.e., 24/86-27.91%). It follows that the infection was more common in pigs reared in the intensive breeding system than in “en plein air” ones (p<0.0001). The infection prevalence was higher in males than in females and lower in elder animals than in younger ones (p=0.012 and p<0.0001, respectively). Conclusion: The breeding system is likely the main discriminant for the parasite spread as well as the hygienic condition of the farms. Good manufacturing and hygiene practices along the food production chain are crucial in preventing human balantidiasis transmission by meat consumption. The high B. coli prevalence, the wide spectrum of host species, and its zoonotic significance push toward a greater public interest.
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Affiliation(s)
- Filippo Giarratana
- Department of Veterinary Science, University of Messina, Polo Universitario dell'Annunziata, 98168 Messina, Italy
| | - Luca Nalbone
- Department of Veterinary Science, University of Messina, Polo Universitario dell'Annunziata, 98168 Messina, Italy
| | - Ettore Napoli
- Department of Veterinary Science, University of Messina, Polo Universitario dell'Annunziata, 98168 Messina, Italy
| | - Vincenzo Lanzo
- Freelance Veterinary Professional , 89024 Polistena (RC), Italy
| | - Antonio Panebianco
- Department of Veterinary Science, University of Messina, Polo Universitario dell'Annunziata, 98168 Messina, Italy
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Brereton CF, Jagals P. Applications of Systems Science to Understand and Manage Multiple Influences within Children's Environmental Health in Least Developed Countries: A Causal Loop Diagram Approach. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18063010. [PMID: 33804085 PMCID: PMC8001252 DOI: 10.3390/ijerph18063010] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Revised: 02/28/2021] [Accepted: 03/08/2021] [Indexed: 02/02/2023]
Abstract
Least developed countries (LDCs) are home to over a billion people throughout Africa, Asia-Pacific, and the Caribbean. The people who live in LDCs represent just 13% of the global population but 40% of its growth rate. Characterised by low incomes and low education levels, high proportions of the population practising subsistence living, inadequate infrastructure, and lack of economic diversity and resilience, LDCs face serious health, environmental, social, and economic challenges. Many communities in LDCs have very limited access to adequate sanitation, safe water, and clean cooking fuel. LDCs are environmentally vulnerable; facing depletion of natural resources, the effects of unsustainable urbanization, and the impacts of climate change, leaving them unable to safeguard their children’s lifetime health and wellbeing. This paper reviews and describes the complexity of the causal relationships between children’s health and its environmental, social, and economic influences in LDCs using a causal loop diagram (CLD). The results identify some critical feedbacks between poverty, family size, population growth, children’s and adults’ health, inadequate water, sanitation and hygiene (WASH), air pollution, and education levels in LDCs and suggest leverage points for potential interventions. A CLD can also be a starting point for quantitative systems science approaches in the field, which can predict and compare the effects of interventions.
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Karnad DR, Amin P. An Approach to a Patient with Tropical Infection in the Intensive Care Unit. Indian J Crit Care Med 2021; 25:S118-S121. [PMID: 34345123 PMCID: PMC8327794 DOI: 10.5005/jp-journals-10071-23867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
How to cite this article: Karnad DR, Amin P. An Approach to a Patient with Tropical Infection in the Intensive Care Unit. Indian J Crit Care Med 2021;25(Suppl 2):S118–S121.
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Affiliation(s)
- Dilip R Karnad
- Department of Critical Care, Jupiter Hospital, Thane, Maharashtra, India
| | - Pravin Amin
- Department of Critical Care, Bombay Hospital Institute of Medical Sciences, Mumbai, Maharashtra, India
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Bayoumy AMS, Hamza HT, Alotabi MA. Histopathological and biochemical studies on immunocompetent and immunocompromised Hymenolepis nana infected mice treated with Commiphora molmol (Mirazid). J Parasit Dis 2020; 44:837-849. [PMID: 33184549 DOI: 10.1007/s12639-020-01263-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Accepted: 08/19/2020] [Indexed: 10/23/2022] Open
Abstract
Hymenolepiasis is a common parasitic infection of children and considered an opportunistic disease with a life-threatening effect among immunocompromised patients through cysticercoid dissemination. Mirazid (Commiphora molmol) is new phytotherapy for hymenolepiasis. So, the present study aimed to evaluate the effects of Mirazid treatment comparing to Praziquantel (PZQ) (standard treatment) among immunocompetent and immunocompromised infected albino mice through biochemical and histopathological parameters. A total of 60 clean male albino mice (immunocompetent group) were divided into equal five groups which were infected and treated with Mirazid beside PZQ. Another 72 infected immunocompromised animals were divided into equal six groups and were also treated with Mirazid and PZQ. Liver and kidney functions were estimated as well as histopathological examination of intestine and liver. Levels of AST in the serum of infected mice treated with Mirazid or PZQ recorded a highly significant increase compared to the normal control group. The percentage of increase was 83.30% and 36.60% respectively. While the infected group recorded a non-significant decrease in AST level and the percentage of decrease was - 7.4%. Immunocompetent groups showed a positive significant correlation with the control Mirazid or control PZQ groups recorded an increase in liver function enzymes (AST, Bilirubin, and GGT) (P < 0.001) comparing to the normal control group. In conclusion, Mirazid showed higher cure rates than PZQ, 95.45%, and 74.54% on the 15th and the 21st days, it reached 100% respectively associated with good improvement of histopathological changes in intestine and liver.
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Affiliation(s)
| | - Hanan Taher Hamza
- Department of Biology, College of Science, Jouf University, P.O.Box: 2014, Sakaka, Saudi Arabia.,Department of Zoology, Faculty of Science for Girls, Al-Azhar University, Cairo, Egypt
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25
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Goudarzi F, Mohtasebi S, Teimouri A, Yimam Y, Heydarian P, Salehi Sangani G, Abbaszadeh Afshar MJ. A systematic review and meta-analysis of Hymenolepis nana in human and rodent hosts in Iran: A remaining public health concern. Comp Immunol Microbiol Infect Dis 2020; 74:101580. [PMID: 33260017 DOI: 10.1016/j.cimid.2020.101580] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2020] [Revised: 11/02/2020] [Accepted: 11/04/2020] [Indexed: 12/17/2022]
Abstract
Hymenolepis nana, as a neglected zoonotic helminth, naturally occurs in both humans and rodents. Herein, a systematic review and meta-analysis was carried out to estimate pooled prevalence of H. nana infection among human and rodent hosts for the first time in Iran. PubMed, Web of Science, Scopus, and Embase databases (English articles) and SID and Magiran databases (Persian articles) were systematically searched for relevant studies published from inception till May 24, 2020. Chi2 and I2 index were used to assess the heterogeneity of the included studies. Publication bias was assessed using Egger's intercept and visual inspection of the funnel plot. Pooled prevalence was estimated using random-effects model with 95 % confidence interval (CI) and depicted as a forest plot. STATA software was used for analysis. The overall pooled prevalence estimate of H. nana in humans included 1.2 % (95 % CI = 1.0-1.4%). Subgroup analysis revealed 2.2 % (95 % CI = 1.8-2.6%) and 0.5 % (95 % CI = 0.3 to 0.8 %) of H. nana infection among school children and food handlers, respectively. In terms of rodent hosts, the overall pooled prevalence of H. nana infection included 13 % (95 % CI = 9.3-16.6%). Subgroup analysis revealed the highest rate of the infection was in Rattus spp. (19.6 %; 95 % CI = 10.6-28.6%), a genus with synanthropic behavior. It seems, despite the advancement in sanitation infrastructure and hygiene status, the H. nana infection compares to other helminthic diseases remains a challenging public health problem in Iran.
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Affiliation(s)
- Fatemeh Goudarzi
- Department of Medical Parasitology and Mycology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Sina Mohtasebi
- Department of Medical Parasitology and Mycology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Aref Teimouri
- Department of Parasitology and Mycology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Yonas Yimam
- Department of Medical Parasitology and Mycology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran; Woldia University, Woldia, Ethiopia
| | - Peyman Heydarian
- Department of Medical Parasitology and Mycology, School of Medicine, Qazvin University of Medical Sciences, Qazvin, Iran
| | - Ghodratollah Salehi Sangani
- Department of Medical Parasitology and Mycology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mohammad Javad Abbaszadeh Afshar
- Department of Medical Parasitology and Mycology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran; Department of Medical Parasitology and Mycology, School of Medicine, Jiroft University of Medical Sciences, Jiroft, Iran.
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26
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Jabbarzare M, Njie M, Jaworowski A, Umbers AJ, Ome-Kaius M, Hasang W, Randall LM, Kalionis B, Rogerson SJ. Innate immune responses to malaria-infected erythrocytes in pregnant women: Effects of gravidity, malaria infection, and geographic location. PLoS One 2020; 15:e0236375. [PMID: 32726331 PMCID: PMC7390391 DOI: 10.1371/journal.pone.0236375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Accepted: 07/02/2020] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Malaria in pregnancy causes maternal, fetal and neonatal morbidity and mortality, and maternal innate immune responses are implicated in pathogenesis of these complications. The effects of malaria exposure and obstetric and demographic factors on the early maternal immune response are poorly understood. METHODS Peripheral blood mononuclear cell responses to Plasmodium falciparum-infected erythrocytes and phytohemagglutinin were compared between pregnant women from Papua New Guinea (malaria-exposed) with and without current malaria infection and from Australia (unexposed). Elicited levels of inflammatory cytokines at 48 h and 24 h (interferon γ, IFN-γ only) and the cellular sources of IFN-γ were analysed. RESULTS Among Papua New Guinean women, microscopic malaria at enrolment did not alter peripheral blood mononuclear cell responses. Compared to samples from Australia, cells from Papua New Guinean women secreted more inflammatory cytokines tumor necrosis factor-α, interleukin 1β, interleukin 6 and IFN-γ; p<0.001 for all assays, and more natural killer cells produced IFN-γ in response to infected erythrocytes and phytohemagglutinin. In both populations, cytokine responses were not affected by gravidity, except that in the Papua New Guinean cohort multigravid women had higher IFN-γ secretion at 24 h (p = 0.029) and an increased proportion of IFN-γ+ Vδ2 γδ T cells (p = 0.003). Cytokine levels elicited by a pregnancy malaria-specific CSA binding parasite line, CS2, were broadly similar to those elicited by CD36-binding line P6A1. CONCLUSIONS Geographic location and, to some extent, gravidity influence maternal innate immunity to malaria.
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MESH Headings
- Adolescent
- Adult
- Australia/epidemiology
- CD36 Antigens/genetics
- Erythrocytes/immunology
- Erythrocytes/parasitology
- Erythrocytes/pathology
- Female
- Gravidity/immunology
- Humans
- Immunity, Innate/genetics
- Interferon-gamma/genetics
- Interferon-gamma/immunology
- Interleukin-6/genetics
- Killer Cells, Natural/immunology
- Killer Cells, Natural/parasitology
- Leukocytes, Mononuclear/immunology
- Leukocytes, Mononuclear/parasitology
- Leukocytes, Mononuclear/pathology
- Malaria, Falciparum/epidemiology
- Malaria, Falciparum/immunology
- Malaria, Falciparum/parasitology
- Middle Aged
- Papua New Guinea/epidemiology
- Plasmodium falciparum/immunology
- Plasmodium falciparum/pathogenicity
- Pregnancy
- Pregnancy Complications, Parasitic/immunology
- Pregnancy Complications, Parasitic/parasitology
- Pregnancy Complications, Parasitic/pathology
- T-Lymphocytes/immunology
- T-Lymphocytes/parasitology
- Young Adult
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Affiliation(s)
- Marzieh Jabbarzare
- Department of Medicine at the Doherty Institute, University of Melbourne, Melbourne, Australia
- * E-mail:
| | - Madi Njie
- Department of Medicine at the Doherty Institute, University of Melbourne, Melbourne, Australia
| | - Anthony Jaworowski
- School of Health and Biomedical Sciences, RMIT University, Melbourne, Victoria, Australia
| | - Alexandra J. Umbers
- Vector Borne Diseases Unit, Papua New Guinea Institute of Medical Research, Madang, Papua New Guinea
| | - Maria Ome-Kaius
- Vector Borne Diseases Unit, Papua New Guinea Institute of Medical Research, Madang, Papua New Guinea
| | - Wina Hasang
- Department of Medicine at the Doherty Institute, University of Melbourne, Melbourne, Australia
| | - Louise M. Randall
- Department of Medicine at the Doherty Institute, University of Melbourne, Melbourne, Australia
| | - Bill Kalionis
- Department of Maternal-Fetal Medicine, Pregnancy Research Centre, Royal Women’s Hospital Department of Obstetrics and Gynaecology, University of Melbourne, Parkville, Australia
| | - Stephen J. Rogerson
- Department of Medicine at the Doherty Institute, University of Melbourne, Melbourne, Australia
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Isshiki M, Naka I, Watanabe Y, Nishida N, Kimura R, Furusawa T, Natsuhara K, Yamauchi T, Nakazawa M, Ishida T, Eddie R, Ohtsuka R, Ohashi J. Admixture and natural selection shaped genomes of an Austronesian-speaking population in the Solomon Islands. Sci Rep 2020; 10:6872. [PMID: 32327716 PMCID: PMC7181741 DOI: 10.1038/s41598-020-62866-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Accepted: 03/16/2020] [Indexed: 11/24/2022] Open
Abstract
People in the Solomon Islands today are considered to have derived from Asian- and Papuan-related ancestors. Papuan-related ancestors colonized Near Oceania about 47,000 years ago, and Asian-related ancestors were Austronesian (AN)-speaking population, called Lapita, who migrated from Southeast Asia about 3,500 years ago. These two ancestral populations admixed in Near Oceania before the expansion of Lapita people into Remote Oceania. To understand the impact of the admixture on the adaptation of AN-speaking Melanesians in Near Oceania, we performed the genome-wide single nucleotide polymorphism (SNP) analysis of 21 individuals from Munda, the main town of the New Georgia Islands in the western Solomon Islands. Population samples from Munda were genetically similar to other Solomon Island population samples. The analysis of genetic contribution from the two different ancestries to the Munda genome revealed significantly higher proportions of Asian- and Papuan-related ancestries in the region containing the annexin A1 (ANXA1) gene (Asian component > 82.6%) and in the human leukocyte antigen (HLA) class II region (Papuan component > 85.4%), respectively. These regions were suspected to have undergone natural selection since the time of admixture. Our results suggest that admixture had affected adaptation of AN-speaking Melanesians in the Solomon Islands.
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Affiliation(s)
- Mariko Isshiki
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Tokyo, 113-0033, Japan
| | - Izumi Naka
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Tokyo, 113-0033, Japan
| | - Yusuke Watanabe
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Tokyo, 113-0033, Japan
| | - Nao Nishida
- Genome Medical Science Project, Research Center for Hepatitis and Immunology, National Center for Global Health and Medicine, Chiba, 272-8516, Japan
| | - Ryosuke Kimura
- Department of Human Biology and Anatomy, Graduate School of Medicine, University of the Ryukyus, Nishihara, 903-0125, Japan
| | - Takuro Furusawa
- Graduate School of Asian and African Area Studies, Kyoto University, Kyoto, 606-8501, Japan
| | - Kazumi Natsuhara
- Department of International Health and Nursing, Faculty of Nursing, Toho University, Tokyo, 143-8540, Japan
| | - Taro Yamauchi
- Faculty of Health Sciences, Hokkaido University, Sapporo, 060-0812, Japan
| | - Minato Nakazawa
- Graduate School of Health Sciences, Kobe University, Kobe, 654-0142, Japan
| | - Takafumi Ishida
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Tokyo, 113-0033, Japan
| | - Ricky Eddie
- National Gizo Hospital, Ministry of Health and Medical Services, P.O. Box 36, Gizo, Solomon Islands
| | | | - Jun Ohashi
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Tokyo, 113-0033, Japan.
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Ahmed A, Ijaz M, Ayyub RM, Ghaffar A, Ghauri HN, Aziz MU, Ali S, Altaf M, Awais M, Naveed M, Nawab Y, Javed MU. Balantidium coli in domestic animals: An emerging protozoan pathogen of zoonotic significance. Acta Trop 2020; 203:105298. [PMID: 31837314 DOI: 10.1016/j.actatropica.2019.105298] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2019] [Revised: 12/10/2019] [Accepted: 12/10/2019] [Indexed: 11/19/2022]
Abstract
Balantidium coli (B. coli) is an emerging ciliated protozoan parasite of zoonotic importance which causes a disease balantidiasis in a variety of host species including pigs, camels, ruminants, equines and even human. This disease has a cosmopolitan distribution with high prevalence rates in tropical and sub-tropical areas of the world due to favorable geo-climatic conditions for the development and survival of the parasite in these regions. Main reservoir hosts for this pathogen are pigs and animals; acquire infection mainly by the ingestion of the food or water contaminated with the porcine feces. The infected animal manifests clinical signs of anorexia, dehydration, profuse watery diarrhea and retarded growth. Wet mount slide prepared from intestinal scrapings and fecal material is used for the identification of trophozoites and cysts stages of this parasite. PCR can also be used to confirm the parasite. Secnidazole, oxytetracycline and metronidazole have varying efficacy against B. coli infection in various domestic animal species. There is no comprehensive literature available on the occurrence and distribution of the infection at international level. Therefore, the published data between 1989 and 2019 regarding this disease is critically analyzed to provide a detailed overview on this pathogen with special emphasis on geographical distribution of B. coli in domestic animals and different therapeutic agents used to treat this infection. This review will pinpoint the endemic regions which may be a source of potential disease outbreaks and will also help in application of more effectual control strategies against balantidiasis.
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Affiliation(s)
- Arslan Ahmed
- Department of Clinical Medicine and Surgery, University of veterinary and animal sciences, Lahore 54600, Pakistan
| | - Muhammad Ijaz
- Department of Clinical Medicine and Surgery, University of veterinary and animal sciences, Lahore 54600, Pakistan.
| | - Rana Muhammad Ayyub
- Department of Economics and Business Management, University of Veterinary and Animal Sciences, Lahore 54600, Pakistan
| | - Awais Ghaffar
- Department of Clinical Medicine and Surgery, University of veterinary and animal sciences, Lahore 54600, Pakistan
| | - Hammad Nayyar Ghauri
- Department of Clinical Medicine and Surgery, University of veterinary and animal sciences, Lahore 54600, Pakistan
| | - Muhammad Umair Aziz
- Department of Clinical Medicine and Surgery, University of veterinary and animal sciences, Lahore 54600, Pakistan
| | - Sadaqat Ali
- Department of Clinical Medicine and Surgery, University of veterinary and animal sciences, Lahore 54600, Pakistan
| | - Muhammad Altaf
- Department of Clinical Medicine and Surgery, University of veterinary and animal sciences, Lahore 54600, Pakistan
| | - Muhammad Awais
- Department of Parasitology, University of veterinary and animal sciences, Lahore 54600, Pakistan
| | - Muhammad Naveed
- Department of Clinical Medicine and Surgery, University of veterinary and animal sciences, Lahore 54600, Pakistan
| | - Yasir Nawab
- Department of Clinical Medicine and Surgery, University of veterinary and animal sciences, Lahore 54600, Pakistan
| | - Muhammad Umar Javed
- Department of Clinical Medicine and Surgery, University of veterinary and animal sciences, Lahore 54600, Pakistan
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Dadar M, Fakhri Y, Shahali Y, Mousavi Khaneghah A. Contamination of milk and dairy products by Brucella species: A global systematic review and meta-analysis. Food Res Int 2019; 128:108775. [PMID: 31955745 DOI: 10.1016/j.foodres.2019.108775] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 10/23/2019] [Accepted: 10/26/2019] [Indexed: 02/07/2023]
Abstract
Brucellosis is known as an influential zoonosis in different regions worldwide, with significant effects on the reproductive performance of livestock. Considering the high incidence of brucellosis in dairy products and further negative impacts on food safety, the present study was aimed to systematically investigate prevalence worldwide among published data regarding the identification of Brucella spp. in dairy products. In this regard, some databases, i.e., Scopus, PubMed, Embase, and Web of Science have been searched to retrieve all related articles regarding the incidence of Brucella contaminations in dairy products from 1 January 1983 to 1 April 2019. The prevalence of Brucella spp. in unpasteurized dairy products based on countries, WHO regions, and dairy product subgroups were evaluated and statistically compared. Based on the findings, the prevalence of Brucella spp. in dairy products increased while the GDP (C = 0.17, P-value < 0.001) and HDI (C = 0.19, P-value < 0.001) ranking decreased. Also, the highest prevalence of Brucella contamination in dairy products was noted in buffalo (25.91%) and goat (17.90%), respectively. The lowest and highest prevalence of Brucella spp. were observed in the Western Pacific (15.32%) and the Southeast Asia region (25.55%), respectively. Also, the rank order of WHO regions based on odds ratio (OR) was Southeast Asia region (2.84) > Eastern Mediterranean (2.41) > Region of America (1.65) > European Region (1.54) > Africa region (1.46) > Western Pacific (reference). The results of this study showed that decreasing poverty and an increase in the level of education in societies could reduce the prevalence of Brucella spp. in dairy products. The outcome of the current investigation can be used for the implementation of sustainable intervention and prevention strategies in affected regions.
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Affiliation(s)
- Maryam Dadar
- Razi Vaccine and Serum Research Institute (RVSRI), Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran
| | - Yadolah Fakhri
- Department of Environmental Health Engineering, Student Research Committee, School of Public Health and Safety, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Youcef Shahali
- Razi Vaccine and Serum Research Institute (RVSRI), Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran.
| | - Amin Mousavi Khaneghah
- Department of Food Science, Faculty of Food Engineering, University of Campinas (UNICAMP), Rua Monteiro Lobato, 80. Caixa Postal: 6121, CEP: 13083-862 Campinas, São Paulo, Brazil
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Horwood PF, Tarantola A, Goarant C, Matsui M, Klement E, Umezaki M, Navarro S, Greenhill AR. Health Challenges of the Pacific Region: Insights From History, Geography, Social Determinants, Genetics, and the Microbiome. Front Immunol 2019; 10:2184. [PMID: 31572391 PMCID: PMC6753857 DOI: 10.3389/fimmu.2019.02184] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Accepted: 08/29/2019] [Indexed: 02/06/2023] Open
Abstract
The Pacific region, also referred to as Oceania, is a geographically widespread region populated by people of diverse cultures and ethnicities. Indigenous people in the region (Melanesians, Polynesians, Micronesians, Papuans, and Indigenous Australians) are over-represented on national, regional, and global scales for the burden of infectious and non-communicable diseases. Although social and environmental factors such as poverty, education, and access to health-care are assumed to be major drivers of this disease burden, there is also developing evidence that genetic and microbiotic factors should also be considered. To date, studies investigating genetic and/or microbiotic links with vulnerabilities to infectious and non-communicable diseases have mostly focused on populations in Europe, Asia, and USA, with uncertain associations for other populations such as indigenous communities in Oceania. Recent developments in personalized medicine have shown that identifying ethnicity-linked genetic vulnerabilities can be important for medical management. Although our understanding of the impacts of the gut microbiome on health is still in the early stages, it is likely that equivalent vulnerabilities will also be identified through the interaction between gut microbiome composition and function with pathogens and the host immune system. As rapid economic, dietary, and cultural changes occur throughout Oceania it becomes increasingly important that further research is conducted within indigenous populations to address the double burden of high rates of infectious diseases and rapidly rising non-communicable diseases so that comprehensive development goals can be planned. In this article, we review the current knowledge on the impact of nutrition, genetics, and the gut microbiome on infectious diseases in indigenous people of the Pacific region.
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Affiliation(s)
- Paul F. Horwood
- College of Public Health, Medical and Veterinary Sciences, James Cook University, Townsville, QLD, Australia
| | | | - Cyrille Goarant
- Institut Pasteur de Nouvelle-Calédonie, Noumea, New Caledonia
| | - Mariko Matsui
- Institut Pasteur de Nouvelle-Calédonie, Noumea, New Caledonia
| | - Elise Klement
- Institut Pasteur de Nouvelle-Calédonie, Noumea, New Caledonia
- Internal Medicine and Infectious Diseases Department, Centre Hospitalier Territorial, Noumea, New Caledonia
| | - Masahiro Umezaki
- Department of Human Ecology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Severine Navarro
- Immunology Department, QIMR Berghofer Medical Research Institute, Herston, QLD, Australia
| | - Andrew R. Greenhill
- School of Health and Life Sciences, Federation University Australia, Churchill, VIC, Australia
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31
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Bouscaren N, Benoit de Coignac C, Lastère S, Musso D, Teissier Y, Formont J, Chaix F, Giard M. Leptospirosis in French Polynesia: 11 years of surveillance data, 2007-2017. New Microbes New Infect 2019; 29:100518. [PMID: 30899522 PMCID: PMC6406075 DOI: 10.1016/j.nmni.2019.100518] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Accepted: 12/03/2018] [Indexed: 01/03/2023] Open
Abstract
Leptospirosis is a worldwide zoonosis with higher incidence in tropical areas and is a neglected disease in the Pacific region. French Polynesia (FP) is a French overseas territory located in the South Pacific. Data on the epidemiology in FP are scarce. In this study, we describe our understanding of leptospirosis epidemiology in FP and discuss the prospects concerning this disease and its surveillance to better address preventive actions. We report 11 years of surveillance data between 1 January 2007 and 31 December 2017. Over the study period, 1356 confirmed and probable leptospirosis cases were reported. The mean annual incidence rate was 46.0 (95% confidence interval, 43.6-48.5) cases per 100 000 inhabitants. We registered 864 (63.7%) hospitalizations; of these, at least 270 (19.9%) were in the intensive care unit, and 24 patients (1.8%) died. Even if the incidence of leptospirosis is lower in FP compared to most of other Pacific countries and territories, our data confirm that the disease is highly endemic in FP. Despite all the preventive measures taken, leptospirosis remains a major public health concern in FP, thus highlighting the need to maintain intensive leptospirosis surveillance, medical staff training and provision of information to the general population.
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Affiliation(s)
- N. Bouscaren
- Inserm CIC1410, CHU Réunion, Saint Pierre, France
| | | | - S. Lastère
- Laboratoire de biologie médicale et d’anatomie pathologique, French Polynesia
| | - D. Musso
- Unit of Emerging Infectious Diseases, Institut Louis Malardé, French Polynesia
- Aix-Marseille Université, IRD, AP-HM, SSA, VITROME, IHU-Méditerranée infection, Marseille, France
| | - Y. Teissier
- Bureau de veille sanitaire, Direction de la santé, Papeete, Tahiti, French Polynesia
| | - J. Formont
- Bureau de veille sanitaire, Direction de la santé, Papeete, Tahiti, French Polynesia
| | - F. Chaix
- Service de médecine interne, Centre hospitalier de la Polynésie française, Pirae, Tahiti, French Polynesia
| | - M. Giard
- Bureau de veille sanitaire, Direction de la santé, Papeete, Tahiti, French Polynesia
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32
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Dorey HF, Dorey JM, Burman NJ, Zweiback DJ, Hameed JM, Kringel JR, Whalen AE, Jairam RA. Observations of Pediatric Disease Prevalence from Pacific Partnership 2015. Mil Med 2019; 183:530-537. [PMID: 29635585 DOI: 10.1093/milmed/usx179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Accepted: 12/21/2017] [Indexed: 11/13/2022] Open
Abstract
Pacific Partnership is an ongoing yearly humanitarian assistance mission to Pacific Rim countries. Although many case reports and surgical successes have been documented, few data have been published specifically about the primary care mission. This article analyzes outpatient pediatric data collected during Pacific Partnership 2015. Eleven different providers documented care delivered to children from birth through age 18 yr, inclusive. Personally de-identified data were entered into spreadsheets, sorted according to country visited, and analyzed with IBM SPSS software looking for disease frequency. One thousand eighty-seven pediatric patients were seen across Fiji, Papua New Guinea (PNG), and the Philippines (PI). Asthma was the first, second, and third most prevalent diagnosis in PNG, Fiji, and PI, with a relative proportion of the total patients seen at 5.4%, 7.2%, and 5%, respectively. In PI, 123 cases of upper respiratory infection were seen, more than four times the next most common diagnosis of normal exam. Thirty-six patients with scabies were seen in Fiji (number 1), with abdominal pain at number 3 (26 cases, 6.5%). Surprisingly, helminths were rarely seen, comprising the sixteenth and fourteenth most common diagnoses in Fiji and PI and only two cases in PNG. Future Pacific Partnership missions can plan medication stock, personnel assignment, equipment needs, and educational literature based on these data.
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Affiliation(s)
- Harlan F Dorey
- Naval Hospital Bremerton, 1 Boone Rd, Bremerton, WA 98312
| | - Jonathan M Dorey
- University of Washington, 1410 NE Campus Pkwy, Seattle, WA 98195
| | - Natalie J Burman
- Naval Medical Center San Diego, 34800 Bob Wilson Dr, San Diego, CA 92134
| | | | - Jessica M Hameed
- Navy/Marine Corps Public Health Center, 620 John Paul Jones Cir #1100, Portsmouth, VA 23704
| | | | | | - Rohan A Jairam
- Naval Hospital Bremerton, 1 Boone Rd, Bremerton, WA 98312
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Musso D, Rovery C, Loukil A, Vialette V, Nguyen NL. Leprosy in French Polynesia. New Microbes New Infect 2019; 29:100514. [PMID: 30911399 PMCID: PMC6416770 DOI: 10.1016/j.nmni.2018.10.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Revised: 10/17/2018] [Accepted: 10/25/2018] [Indexed: 10/27/2022] Open
Abstract
Leprosy is a neglected endemic infectious disease in the Pacific region. In French Polynesia (FP), leprosy is no longer a public health problem at the national level, defined by the World Health Organization as a prevalence rate below 1 case per 10,000 population. However, even if its incidence has dramatically declined in FP in the last decades, leprosy is still endemic at a low level. Here we present a case of leprosy in a 34-year-old man from FP diagnosed in 2018. Clinical and microbiologic examinations, including fluorescence in-situ hybridization, led to the diagnosis of a multibacillary leprosy, and multidrug therapy was initiated. There is a need to maintain leprosy surveillance and trained medical staff for the detection and treatment of new cases.
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Affiliation(s)
- D Musso
- Unit of Emerging Infectious Diseases, Institut Louis Malardé.,Aix-Marseille Université, IRD, AP-HM, SSA, VITROME, IHU Méditerranée Infection
| | | | - A Loukil
- Aix-Marseille Université, MEPHI, IRD, IHU Méditerranée Infection, Marseille, France
| | - V Vialette
- Unit of Emerging Infectious Diseases, Institut Louis Malardé
| | - N L Nguyen
- Infectious and Tropical Diseases Unit, Public Health Direction, Tahiti, French Polynesia
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Jian YN, Wang GP, Li XP, Zhang XY, Ma LQ. The First Case of Diarrhoea in Tibetan Sheep, Ovis aries, Caused by Balantidium coli in the Qinghai Tibetan Plateau Area, China. THE KOREAN JOURNAL OF PARASITOLOGY 2018; 56:603-607. [PMID: 30630282 PMCID: PMC6327202 DOI: 10.3347/kjp.2018.56.6.603] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Accepted: 10/19/2018] [Indexed: 11/30/2022]
Abstract
This study was carried out to determine the pathogen-causing diarrhoea in sheep Ovis aries in the Qinghai Tibetan Plateau Area, China. A trophozoite was identified as species of ciliate alveolates infecting the sheep based on morphological characteristics examined by microscope. It was mostly spherical, colourless and transparent, with many vesicles. Macronucleus and contractile vacuoles could not be distinguished. Size of the trophozoite was 80–180×70–150 μm and its surface was covered with cilia. Molecular analysis based on sequences of 18S rRNA and ITS genes confirmed the ciliate species as Balantidium coli. According to the literature, there have been many epidemiological investigations of B. coli infection in pigs, monkeys and humans. To our knowledge, this was the first report of B. coli infections in sheep in the Qinghai Tibetan Plateau Area of China, or eleswhere around the world. Importantly, the sheep case was rare but raised our concern that B. coli may spread across species and expand its host range.
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Affiliation(s)
- Ying-Na Jian
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Qinghai Academy of Animal Sciences and Veterinary Medicine, Qinghai University, Xining City, 810016, Qinghai Province, P. R. China
| | - Ge-Ping Wang
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Qinghai Academy of Animal Sciences and Veterinary Medicine, Qinghai University, Xining City, 810016, Qinghai Province, P. R. China
| | - Xiu-Ping Li
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Qinghai Academy of Animal Sciences and Veterinary Medicine, Qinghai University, Xining City, 810016, Qinghai Province, P. R. China
| | - Xue-Yong Zhang
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Qinghai Academy of Animal Sciences and Veterinary Medicine, Qinghai University, Xining City, 810016, Qinghai Province, P. R. China
| | - Li-Qing Ma
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Qinghai Academy of Animal Sciences and Veterinary Medicine, Qinghai University, Xining City, 810016, Qinghai Province, P. R. China
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Handley BL, Roberts CH, Butcher R. A systematic review of historical and contemporary evidence of trachoma endemicity in the Pacific Islands. PLoS One 2018; 13:e0207393. [PMID: 30440006 PMCID: PMC6237375 DOI: 10.1371/journal.pone.0207393] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Accepted: 10/19/2018] [Indexed: 12/03/2022] Open
Abstract
INTRODUCTION Trachoma is endemic in several Pacific Island countries. The aims of this study were to (a) identify future trachoma mapping needs in the Pacific and (b) to examine whether any temporal trends in trachoma prevalence could be ascertained from the historical literature on trachoma in the Pacific Islands. METHODS Human studies of trachoma and eye care in the Pacific Islands were identified from a systematic search of PubMed, EMbase, Scopus and Web of Science databases. A published quality assessment system for disease prevalence studies was modified to assess studies for quality and transparency. RESULTS Few general ophthalmic studies in the Pacific mention trachoma. In targeted studies of trachoma, cases have consistently been identified throughout the Pacific since the early twentieth century. The largest number of studies come from Papua New Guinea and Fiji, whereas some countries have no published data on trachoma. The majority of studies identified were published before the Alliance for the Global Elimination of Trachoma 2020 was convened, so lack the standardisation of population-based mapping which has been implemented in the past decade. CONCLUSIONS Population-based trachoma prevalence estimates have been recently generated in Papua New Guinea, Solomon Islands, Vanuatu, Kiribati and Fiji. There is insufficient evidence to assess whether there has been temporal change in trachoma prevalence in these countries over the past century. Cases of trachoma have been identified in some countries (for example, Nauru and Samoa) which have no recent population-based mapping data, but may be at risk of trachoma endemcitiy. Deployment of appropriate mapping strategies is warranted to identify whether interventions are required.
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Affiliation(s)
- Becca L. Handley
- Clinical Research Department, London School of Hygiene & Tropical Medicine, London, United Kingdom
| | - Chrissy h. Roberts
- Clinical Research Department, London School of Hygiene & Tropical Medicine, London, United Kingdom
| | - Robert Butcher
- Clinical Research Department, London School of Hygiene & Tropical Medicine, London, United Kingdom
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Diarthini NLPE, Swastika IK, Ariwati L, Isyaputri R, Fitri N MY, Hidajati S, Basuki S. BLASTOCYSTIS AND OTHER INTESTINAL PARASITES INFECTIONS IN ELEMENTARY SCHOOL CHILDREN IN DUKUH VILLAGE, KARANGASEM DISTRICT, BALI. INDONESIAN JOURNAL OF TROPICAL AND INFECTIOUS DISEASE 2018. [DOI: 10.20473/ijtid.v7i3.7323] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Blastocystis spp. is the most common enteric parasitic infection found in several community surveys from developing countries. Blastocystis infections may cause gastrointestinal symptoms, but also cause extraintestinal symptoms such as urticaria and joint pain. Blastocystis infection can also be asymptomatic or a carrier. However, the prevalence of Blastocystis infection in children has not yet been fully investigated in Indonesia, particularly in Bali Province. This study aimed to determine the prevalence of Blastocystis and other intestinal parasites in elementary school children stools in Dukuh village, Karangasem regency. A cross sectional study was conducted in September 2016. A total of 103 school children stools were collected by informed consent and parasites were examined by microscopy with wet mounts method using Lugol’s iodine solution. Thirty-five school children were infected with Blastocystis spp. (35/103, 34%) that consisted of a single infection (29/35, 82.9%) and mix infection with other parasites (6/35, 17.1%). The mix infections were Blastocystis spp. and hookworm infection (1/6, 16.7%), Blastocystis spp. and Entamoeba coli (1/6, 16.7%), Blastocystis spp. and Giardia lamblia (2/6, 33.3%), Blastocystis spp. and Entamoeba histolytica/ Entamoeba dispar (1/6, 16.7%) and Blastocystis spp. and Entamoeba histolytica/ Entamoeba dispar and Giardia lamblia (1/6, 16.7%). The vacuolar forms of Blastocystis were dominantly found, in which was non-infectious form, whereas the infectious form is the cyst form and Blastocystis density was observed less than 5 cells per field of view at 400 magnification in all cases. This study concluded that the high prevalence of Blastocystis infection in elementary school children in Dukuh Village, Karangasem District, Bali that were dominantly single infections and several mix infections with other intestinal parasites. The high prevalence of Blastocystis infection in elementary school children suggested that it needs proper prevention measures for the children in this study area.
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Gordon CA, Jones MK, McManus DP. The History of Bancroftian Lymphatic Filariasis in Australasia and Oceania: Is There a Threat of Re-Occurrence in Mainland Australia? Trop Med Infect Dis 2018; 3:E58. [PMID: 30274454 PMCID: PMC6073764 DOI: 10.3390/tropicalmed3020058] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Revised: 05/30/2018] [Accepted: 05/31/2018] [Indexed: 12/18/2022] Open
Abstract
Lymphatic filariasis (LF) infects an estimated 120 million people worldwide, with a further 856 million considered at risk of infection and requiring preventative chemotherapy. The majority of LF infections are caused by Wuchereria bancrofti, named in honour of the Australian physician Joseph Bancroft, with the remainder due to Brugia malayi and B. timori. Infection with LF through the bite of an infected mosquito, can lead to the development of the condition known as elephantiasis, where swelling due to oedema leads to loss of function in the affected area and thickening of the skin, 'like an elephant'. LF has previously been endemic in Australia, although currently, no autochthonous cases occur there. Human immigration to Australia from LF-endemic countries, including those close to Australia, and the presence of susceptible mosquitoes that can act as suitable vectors, heighten the possibility of the reintroduction of LF into this country. In this review, we examine the history of LF in Australia and Oceania and weigh up the potential risk of its re-occurrence on mainland Australia.
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Affiliation(s)
- Catherine A Gordon
- Molecular Parasitology Laboratory, QIMR Berghofer Medical Research Institute, Brisbane, QLD 4006, Australia.
| | - Malcolm K Jones
- School of Veterinary Science, University of Queensland, Brisbane, QLD 4072, Australia.
| | - Donald P McManus
- Molecular Parasitology Laboratory, QIMR Berghofer Medical Research Institute, Brisbane, QLD 4006, Australia.
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Tukana A, Hedlefs R, Gummow B. The impact of national policies on animal disease reporting within selected Pacific Island Countries and Territories (PICTs). Trop Anim Health Prod 2018; 50:1547-1558. [PMID: 29679359 DOI: 10.1007/s11250-018-1594-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2017] [Accepted: 04/09/2018] [Indexed: 01/08/2023]
Abstract
A semi-systematic literature review of national policies was carried out in relation to surveillance and disease reporting in Pacific Island Countries and Territories (PICTs). It also analysed the animal disease reporting structures in Fiji, Papua New Guinea (PNG), Vanuatu and the Solomon Islands. The strengths, weaknesses, opportunities and threats (SWOT) of those reporting structures were examined in relation to how they impacted the detection and management of animal diseases in PICTs. Field missions collected information on animal disease reporting structures and these were discussed in detail with country officials and documented. The findings from the literature review indicated that there is very little policy to support work in surveillance and disease reporting within national government structures of the countries studied. This increases the potential for disease transmission and the introduction of exotic diseases as the efficiency of disease reporting is low. The findings from the SWOT analysis of the reporting structures indicated that there were commonalities across the countries studied, i.e. reporting structures were long with multiple legs that were not functioning properly and this was worsened when positions were vacant in the reporting structure. The hierarchical nature of the reporting structure also reduced reporting efficiency as reports took a longer time to reach decision makers at the top of the structure. High officer turnover and the shortage of veterinarians in the countries studied also affected the efficiency of disease reporting as most in-county officials were inexperienced and could not recognise disease signs and there were no veterinarians to supervise them. Existing reporting structures need to be reviewed to remove duplication and shorten the chain. However, this could override existing command structures and would need to be documented and awareness created with the officers involved. There also needs to be more collaboration with FAO, OIE, academic institutions and national governments to create an environment conducive for the development of policies that support work on surveillance to improve disease reporting in PICTs. The shortage of veterinarians could be addressed by influencing national governments to create better policies to retain veterinarians in the animal health services; this should be supported by creating reasonable work conditions and remuneration packages. This should also be supported with policies to send young graduates to study veterinary science overseas and have a career path for them when they return. Engagement of retired veterinarians from developed countries and re-evaluating the criteria for veterinarian registration could be short-term solutions to address the shortage of veterinarians in PICTs.
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Affiliation(s)
- Andrew Tukana
- Discipline of Veterinary Science, James Cook University, Townsville, Queensland, 4811, Australia. .,Animal Health and Production Thematic Team, Land Resources Division, The Secretariat of the Pacific Community (SPC), 3 Luke Street, Nabua, Suva, Fiji Islands.
| | - Robert Hedlefs
- Discipline of Veterinary Science, James Cook University, Townsville, Queensland, 4811, Australia
| | - Bruce Gummow
- Discipline of Veterinary Science, James Cook University, Townsville, Queensland, 4811, Australia.,Faculty of Veterinary Science, University of Pretoria, Pretoria, South Africa
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Yoshikawa M, Ouji Y, Hirai N, Nakamura-Uchiyama F, Yamada M, Arizono N, Akamatsu N, Yoh T, Kaya D, Nakatani T, Kikuchi E, Katanami Y, Satoh K, Maki R, Miyazato Y, Oba Y, Kasahara K, Mikasa K. Ancylostoma ceylanicum, novel etiological agent for traveler's diarrhea-report of four Japanese patients who returned from Southeast Asia and Papua New Guinea. Trop Med Health 2018; 46:6. [PMID: 29563849 PMCID: PMC5848582 DOI: 10.1186/s41182-018-0087-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Accepted: 02/07/2018] [Indexed: 11/10/2022] Open
Abstract
Background Countries in the Southeast Asia region have a high prevalence of soil-transmitted helminth, such as roundworm, whipworm, and hookworms [Ancylostoma duodenale, Necator americanus, Ancylostoma ceylanicum]. Recent molecular-based surveys have revealed that A. ceylanicum, a zoonotic hookworm, is likely the second most prevalent hookworm species infecting humans in that part of the world, while others have noted that this infection is an emerging public health risk not only for indigenous people but also for visitors from other countries. Case presentation We recently encountered four cases of A. ceylanicum infection in Japanese individuals who returned from Southeast Asia and Papua New Guinea. Case 1 was a 25-year-old male who stayed in a rainforest in Malaysia for 4 weeks, where he developed abdominal pain and diarrhea in the third week. Eleven adult worms (five males, six females) were expelled after treatment with pyrantel pamoate and identified as A. ceylanicum based on morphological characteristics and DNA sequences of the mitochondrial cytochrome c oxidase subunit 1 (cox1) gene. Case 2 was a 26-year-old male who spent 2 years as an overseas cooperation volunteer for agriculture in Papua New Guinea. He did not note any symptoms at that time, though eggs were detected in feces samples at a medical check-up examination after returning. Although collection of adult worms was unsuccessful, DNA analysis of the eggs for cox1 and the ribosomal internal transcribed spacer (ITS)-1 and ITS-2 genes demonstrated that they were A. ceylanicum. Case 3 was a 47-year-old male who spent 1 month in a rural village in Lao People's Democratic Republic and began suffering from watery diarrhea from the third week. A total of nine adult worms (three males, six females) were collected by endoscopic procedures and following treatment with pyrantel pamoate. Morphological examination and molecular analyses of the cox1 gene showed that they were A. ceylanicum. Case 4 was a 27-year-old male who participated in group travel to India for 5 days. Three weeks after returning, he developed abdominal pain and diarrhea. Hookworm eggs were found in feces samples and developed into larvae in culture, which were identified as A. ceylanicum based on molecular analysis of the cox1 gene. Eosinophilia was observed in all of the cases prior to treatment. Conclusions A. ceylanicum should be recognized as an important etiologic pathogen of hookworm diseases in travelers to countries in the Southeast Asia and West Pacific Ocean regions.
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Affiliation(s)
- Masahide Yoshikawa
- 1Department of Pathogen, Infection and Immunity, Nara Medical University, Shijo-cho, Kashihara, Nara, 634-8521 Japan
| | - Yukiteru Ouji
- 1Department of Pathogen, Infection and Immunity, Nara Medical University, Shijo-cho, Kashihara, Nara, 634-8521 Japan
| | - Nobuyasu Hirai
- 1Department of Pathogen, Infection and Immunity, Nara Medical University, Shijo-cho, Kashihara, Nara, 634-8521 Japan.,2Center for Infectious Diseases, Nara Medical University, Shijo-cho, Kashihara, Nara, Japan
| | - Fukumi Nakamura-Uchiyama
- 1Department of Pathogen, Infection and Immunity, Nara Medical University, Shijo-cho, Kashihara, Nara, 634-8521 Japan.,2Center for Infectious Diseases, Nara Medical University, Shijo-cho, Kashihara, Nara, Japan
| | - Minoru Yamada
- 3Department of Infectious Diseases, Kyoto Prefectural University of Medicine, Kyoto, 612-8369 Japan
| | - Naoki Arizono
- 3Department of Infectious Diseases, Kyoto Prefectural University of Medicine, Kyoto, 612-8369 Japan
| | - Naoaki Akamatsu
- Department of Gastroenterology, Omihachiman Community Medical Center, Omihachiman, Japan
| | - Takaharu Yoh
- Department of Gastroenterology, Omihachiman Community Medical Center, Omihachiman, Japan
| | - Daisuke Kaya
- Department of Gastroenterology, Nara Prefectural General Medical Center, Nara, Japan
| | - Toshiya Nakatani
- Department of Gastroenterology, Nara Prefectural General Medical Center, Nara, Japan
| | - Eiryo Kikuchi
- Department of Gastroenterology, Nara Prefectural General Medical Center, Nara, Japan
| | - Yuichi Katanami
- 6Department of Infectious Diseases, Nara City Hospital, Nara, Japan
| | - Kimitoshi Satoh
- 6Department of Infectious Diseases, Nara City Hospital, Nara, Japan
| | - Ryosuke Maki
- Department of Infectious Diseases, Osaka General Medical Center, Osaka, Japan
| | - Yusuke Miyazato
- Department of Infectious Diseases, Osaka General Medical Center, Osaka, Japan
| | - Yuichiro Oba
- Department of Infectious Diseases, Osaka General Medical Center, Osaka, Japan
| | - Kei Kasahara
- 2Center for Infectious Diseases, Nara Medical University, Shijo-cho, Kashihara, Nara, Japan
| | - Keiichi Mikasa
- 2Center for Infectious Diseases, Nara Medical University, Shijo-cho, Kashihara, Nara, Japan
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Harwood JF, Rama V, Hash JM, Gordon SW. The Attractiveness of the Gravid Aedes Trap to Dengue Vectors in Fiji. JOURNAL OF MEDICAL ENTOMOLOGY 2018; 55:481-484. [PMID: 29244174 DOI: 10.1093/jme/tjx221] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The Gravid Aedes Trap (GAT) is a passive trap that relies on visual and olfactory cues to lure and capture gravid mosquitoes. The GAT was designed as a dengue vector surveillance tool for use in conditions where power sources are not readily available. Experiments were conducted over a 10-d period in Fiji to determine which species of mosquitoes the GAT would collect, how different infusion types affect the attractiveness of the trap, how long each infusion type took to begin attracting mosquitoes, and how long the infusion was attractive to container breeding Aedes mosquitoes. Infusions were created by adding 10 g of organic material to 2 liters of water. Infusions were made using chicken feed pellets, dried mango leaves (Mangifera indica), and dried lawn grasses (primarily Axonopus spp.). The GAT collected four different vectors Aedes aegypti (Linnaeus) (Diptera: Culicidae), Aedes albopictus (Skuse) (Diptera: Culicidae), Aedes polynesiensis Mark (Diptera: Culicidae), and Culex quinquefasciatus Say (Diptera: Culicidae). As observed in previous studies, using some type of organic infusion improved the attractiveness of the trap. Of the three different infusion components tested, chicken feed was most attractive followed by lawn grasses and mango leaves. All infusions performed better than plain water. Chicken feed was found to be most attractive for Ae. aegypti and Ae. albopictus during the first 6 d after placing the traps and for Cx. quinquifasciatus in days 7-9. The mango and grass infusions took longer to attract mosquitoes but were most attractive during days 7-10 for all species.
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Affiliation(s)
- James F Harwood
- Navy Environmental and Preventive Medicine Unit 6, Honolulu, HI
| | - Vineshwaran Rama
- National Vector Control Unit, Ministry of Health and Medical Services, Suva, Fiji
| | - John M Hash
- Entomology Department, University of California, Riverside, CA
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Kim SH, Rinamalo M, Rainima-Qaniuci M, Talemaitoga N, Kama M, Rafai E, Lowry JH, Choi MH, Hong ST, Verweij JJ, Kelly-Hope L, Stothard JR. Island-Wide Surveillance of Gastrointestinal Protozoan Infection on Fiji by Expanding Lymphatic Filariasis Transmission Assessment Surveys as an Access Platform. Am J Trop Med Hyg 2018; 98:1179-1185. [PMID: 29405101 PMCID: PMC5928820 DOI: 10.4269/ajtmh.17-0559] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
As part of lymphatic filariasis (LF) transmission assessment surveys (TAS) on Fiji, an island-wide assessment of gastrointestinal protozoan infection was performed by inspection of a concomitant stool sample collection to investigate the distribution of parasitic protozoa. All grade 1 and 2 students of 69 schools on the two main islands were targeted in two phases (one in the Western Division and the other in the Central and Northern Divisions, except Taveuni sub-Division of Northern), where fecal samples of 1,800 students were available for coproscopy using formalin-ether-acetate concentration. The overall prevalence of Giardia infection was 1.6%, having 2.2% in Western and 0.8% in Central/Northern Divisions (P = 0.094). The school-level prevalence of giardiasis ranged from 0% to 15.4%, and hotspot analysis using the Getis-Ord Gi* method detected spatial heterogeneity of giardiasis prevalence in schools around Lautoka (Z-score = 3.36, P value < 0.05), an area affected by Cyclone Kofi in February 2014. Any protozoan infection prevalence was 4.9% in Western and 4.4% in Central/Northern Divisions (P = 0.825). Real-time polymerase chain reaction analysis to confirm the findings from a parasitological examination of a 10% stool archive in 95% ethanol from Western Division revealed an elevated prevalence of giardiasis up to 22.4%, the presence of Entamoeba histolytica, and the absence of Cryptosporidium parvum. Obtaining stool samples alongside LF TAS is a convenient access platform for cosurveillance of gastrointestinal protozoan infection and has pinpointed hitherto unknown hotspots of giardiasis in urban city centers of Fiji. This calls for greater attention to apply tailored water, sanitation and hygiene measures for the control of these parasites.
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Affiliation(s)
- Sung Hye Kim
- Department of Parasitology, Liverpool School of Tropical Medicine, Liverpool, United Kingdom
| | | | | | | | - Mike Kama
- Ministry of Health, Dinem House, Suva, Republic of Fiji
| | - Eric Rafai
- Ministry of Health, Dinem House, Suva, Republic of Fiji
| | - John H Lowry
- School of Geography, Earth Science, and Environment, The University of South Pacific, Suva, Republic of Fiji
| | - Min-Ho Choi
- Department of Parasitology and Tropical Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Sung-Tae Hong
- Department of Parasitology and Tropical Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Jaco J Verweij
- Laboratory of Medical Microbiology and Immunology, Elisabeth Hospital, Tilburg, The Netherlands
| | - Louise Kelly-Hope
- Department of Parasitology, Liverpool School of Tropical Medicine, Liverpool, United Kingdom
| | - J Russell Stothard
- Department of Parasitology, Liverpool School of Tropical Medicine, Liverpool, United Kingdom
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Nabeya D, Haranaga S, Parrott GL, Kinjo T, Nahar S, Tanaka T, Hirata T, Hokama A, Tateyama M, Fujita J. Pulmonary strongyloidiasis: assessment between manifestation and radiological findings in 16 severe strongyloidiasis cases. BMC Infect Dis 2017; 17:320. [PMID: 28464844 PMCID: PMC5414214 DOI: 10.1186/s12879-017-2430-9] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Accepted: 04/28/2017] [Indexed: 11/17/2022] Open
Abstract
Background Strongyloidiasis is a chronic parasitic infection caused by Strongyloides stercoralis. Severe cases such as, hyperinfection syndrome (HS) and disseminated strongyloidiasis (DS), can involve pulmonary manifestations. These manifestations frequently aid the diagnosis of strongyloidiasis. Here, we present the pulmonary manifestations and radiological findings of severe strongyloidiasis. Methods From January 2004 to December 2014, all patients diagnosed with severe strongyloidiasis at the University of the Ryukyus Hospital or affiliated hospitals in Okinawa, Japan, were included in this retrospective study. All diagnoses were confirmed by the microscopic or histopathological identification of larvae. Severe strongyloidiasis was defined by the presence of any of the following: 1) the identification of S. stercoralis from extra gastrointestinal specimens, 2) sepsis, 3) meningitis, 4) acute respiratory failure, or 5) respiratory tract hemorrhage. Patients were assigned to either HS or DS. Medical records were further reviewed to extract related clinical features and radiological findings. Results Sixteen severe strongyloidiasis cases were included. Of those, fifteen cases had pulmonary manifestations, eight had acute respiratory distress syndrome (ARDS) (53%), seven had enteric bacterial pneumonia (46%) and five had pulmonary hemorrhage (33%). Acute respiratory failure was a common indicator for pulmonary manifestation (87%). Chest X-ray findings frequently showed diffuse shadows (71%). Additionally, ileum gas was detected for ten of the sixteen cases in the upper abdomen during assessment with chest X-ray. While, chest CT findings frequently showed ground-glass opacity (GGO) in 89% of patients. Interlobular septal thickening was also frequently shown (67%), always accompanying GGO in upper lobes. Conclusions In summary, our study described HS/DS cases with pulmonary manifestations including, ARDS, bacterial pneumonia and pulmonary hemorrhage. Chest X-ray findings in HS/DS cases frequently showed diffuse shadows, and the combination of GGO and interlobular septal thickening in chest CT was common in HS/DS, regardless of accompanying pulmonary manifestations. This CT finding suggests alveolar hemorrhage could be used as a potential marker indicating the transition from latent to symptomatic state. Respiratory specimens are especially useful for detecting larvae in cases of HS/DS.
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Affiliation(s)
- Daijiro Nabeya
- Department of Infectious Diseases, Respiratory, and Digestive Medicine, Graduate School of Medicine, University of the Ryukyus, 207 Uehara, Nishihara, Okinawa, 903-0215, Japan.
| | - Shusaku Haranaga
- Department of Infectious Diseases, Respiratory, and Digestive Medicine, Graduate School of Medicine, University of the Ryukyus, 207 Uehara, Nishihara, Okinawa, 903-0215, Japan
| | - Gretchen Lynn Parrott
- Department of Infectious Diseases, Respiratory, and Digestive Medicine, Graduate School of Medicine, University of the Ryukyus, 207 Uehara, Nishihara, Okinawa, 903-0215, Japan
| | - Takeshi Kinjo
- Department of Infectious Diseases, Respiratory, and Digestive Medicine, Graduate School of Medicine, University of the Ryukyus, 207 Uehara, Nishihara, Okinawa, 903-0215, Japan
| | - Saifun Nahar
- Department of Infectious Diseases, Respiratory, and Digestive Medicine, Graduate School of Medicine, University of the Ryukyus, 207 Uehara, Nishihara, Okinawa, 903-0215, Japan
| | - Teruhisa Tanaka
- Department of Infectious Diseases, Respiratory, and Digestive Medicine, Graduate School of Medicine, University of the Ryukyus, 207 Uehara, Nishihara, Okinawa, 903-0215, Japan
| | - Tetsuo Hirata
- Department of Infectious Diseases, Respiratory, and Digestive Medicine, Graduate School of Medicine, University of the Ryukyus, 207 Uehara, Nishihara, Okinawa, 903-0215, Japan
| | - Akira Hokama
- Department of Infectious Diseases, Respiratory, and Digestive Medicine, Graduate School of Medicine, University of the Ryukyus, 207 Uehara, Nishihara, Okinawa, 903-0215, Japan
| | - Masao Tateyama
- Department of Infectious Diseases, Respiratory, and Digestive Medicine, Graduate School of Medicine, University of the Ryukyus, 207 Uehara, Nishihara, Okinawa, 903-0215, Japan
| | - Jiro Fujita
- Department of Infectious Diseases, Respiratory, and Digestive Medicine, Graduate School of Medicine, University of the Ryukyus, 207 Uehara, Nishihara, Okinawa, 903-0215, Japan
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Leder K, Torresi J, Shaw M. Australia, New Zealand. Infect Dis (Lond) 2017. [DOI: 10.1002/9781119085751.ch25] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Affiliation(s)
- Karin Leder
- Travel Medicine and Immigrant Health, Victorian Infectious Disease Service, Royal Melbourne Hospital and Infectious Disease Epidemiology Unit, Department of Epidemiology and Preventive Medicine; Monash University; Australia
| | - Joseph Torresi
- Department of Microbiology and Immunology, Peter Doherty Institute for Infection and Immunity; University of Melbourne; Melbourne Australia
- Eastern Infectious Diseases and Travel Medicine; Boronia Victoria Australia
| | - Marc Shaw
- School of Public Health; James Cook University; Townsville Australia
- WORLDWISE Travellers Health Centres; New Zealand
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Leder K, Torresi J, Shaw M. Oceania. Infect Dis (Lond) 2017. [DOI: 10.1002/9781119085751.ch26] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Affiliation(s)
- Karin Leder
- Travel Medicine and Immigrant Health, Victorian Infectious Disease Service, Royal Melbourne Hospital and Infectious Disease Epidemiology Unit, Department of Epidemiology and Preventive Medicine; Monash University; Australia
| | - Joseph Torresi
- Department of Microbiology and Immunology, Peter Doherty Institute for Infection and Immunity; University of Melbourne; Melbourne Australia
- Eastern Infectious Diseases and Travel Medicine; Boronia, Victoria Australia
| | - Marc Shaw
- School of Public Health; James Cook University; Townsville Australia
- WORLDWISE Travellers Health Centres; New Zealand
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Byler KG, Collins JT, Ogungbe IV, Setzer WN. Alphavirus protease inhibitors from natural sources: A homology modeling and molecular docking investigation. Comput Biol Chem 2016; 64:163-184. [DOI: 10.1016/j.compbiolchem.2016.06.005] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2016] [Revised: 05/08/2016] [Accepted: 06/20/2016] [Indexed: 12/11/2022]
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May P, Bowen A, Tong S, Steer A, Prince S, Andrews R, Currie B, Carapetis J. Protocol for the systematic review of the prevention, treatment and public health management of impetigo, scabies and fungal skin infections in resource-limited settings. Syst Rev 2016; 5:162. [PMID: 27659511 PMCID: PMC5034664 DOI: 10.1186/s13643-016-0335-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Accepted: 09/09/2016] [Indexed: 12/03/2022] Open
Abstract
BACKGROUND Impetigo, scabies, and fungal skin infections disproportionately affect populations in resource-limited settings. Evidence for standard treatment of skin infections predominantly stem from hospital-based studies in high-income countries. The evidence for treatment in resource-limited settings is less clear, as studies in these populations may lack randomisation and control groups for cultural, ethical or economic reasons. Likewise, a synthesis of the evidence for public health control within endemic populations is also lacking. We propose a systematic review of the evidence for the prevention, treatment and public health management of skin infections in resource-limited settings, to inform the development of guidelines for the standardised and streamlined clinical and public health management of skin infections in endemic populations. METHODS The protocol has been designed in line with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses Protocols statement. All trial designs and analytical observational study designs will be eligible for inclusion. A systematic search of the peer-reviewed literature will include PubMed, Excertpa Medica and Global Health. Grey literature databases will also be systematically searched, and clinical trials registries scanned for future relevant studies. The primary outcome of interest will be the clinical cure or decrease in prevalence of impetigo, scabies, crusted scabies, tinea capitis, tinea corporis or tinea unguium. Two independent reviewers will perform eligibility assessment and data extraction using standardised electronic forms. Risk of bias assessment will be undertaken by two independent reviewers according to the Cochrane Risk of Bias tool. Data will be tabulated and narratively synthesised. We expect there will be insufficient data to conduct meta-analysis. The final body of evidence will be reported against the Grades of Recommendation, Assessment, Development and Evaluation grading system. DISCUSSION The evidence derived from the systematic review will be used to inform the development of guidelines for the management of skin infections in resource-limited settings. The evidence derived will be intended for use by clinicians, public health practitioners and policy makers in the treatment of skin infections and the development of skin infection control programmes. The review will identify any gaps in the current evidence to provide direction for future research. SYSTEMATIC REVIEW REGISTRATION PROSPERO CRD42015029453.
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Affiliation(s)
- Philippa May
- Wesfarmers Centre for Vaccines and Infectious Diseases, Telethon Kids Institute, University of Western Australia, PO Box 855, West Perth, WA 6872 Australia
| | - Asha Bowen
- Telethon Kids Institute, University of Western Australia, West Perth, Australia
| | - Steven Tong
- Menzies School of Health Research, Charles Darwin University, Casuarina, Australia
| | - Andrew Steer
- Murdoch Children’s Research Institute, University of Melbourne, Parkville, Australia
| | | | - Ross Andrews
- Menzies School of Health Research, Charles Darwin University, Casuarina, Australia
| | - Bart Currie
- Menzies School of Health Research, Charles Darwin University, Casuarina, Australia
| | - Jonathan Carapetis
- Telethon Kids Institute, University of Western Australia, West Perth, Australia
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Kim S, Rinamalo M, Rainima-Qaniuci M, Talemaitoga N, Kama M, Rafai E, Choi MH, Hong S, Verweij J, Kelly-Hope L, Stothard J. Short communication: Epidemiological assessment of Strongyloides stercoralis in Fijian children. Parasite Epidemiol Control 2016; 1:263-267. [PMID: 29988183 PMCID: PMC5991857 DOI: 10.1016/j.parepi.2016.08.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Accepted: 08/31/2016] [Indexed: 11/12/2022] Open
Abstract
As a part of the lymphatic filariasis (LF) transmission assessment survey (TAS)/soil-transmitted helminths (STH) prevalence survey in Western Division of Fiji, a pilot screen for Strongyloides stercoralis (SS) in school children was undertaken using a combination of the Baermann concentration (BC) method and real-time PCR assays. Using BC, faecal samples collected from 111 children of 7 schools were examined. A single child was positive for larvae of SS and underwent a clinical examination finding an asymptomatic infection. Other members of this child's household were screened with BC, finding none infected. Aliquots of 173 faecal samples preserved in ethanol originating from all schools were examined by real-time PCR, and the prevalence of SS infection was 3.5%. Our study confirms the existence of SS infection on Fiji and showed that assessing SS prevalence alongside TAS/STH survey is a convenient access platform, allowing introduction of other surveillance techniques such as BC and real-time PCR.
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Chambers EW, Bossin HC, Ritchie SA, Russell RC, Dobson SL. The impact of insecticide-treated cloth targets on the survival of Stegomyia polynesiensis (= Aedes polynesiensis) under laboratory and semi-field conditions in French Polynesia. MEDICAL AND VETERINARY ENTOMOLOGY 2016; 30:247-252. [PMID: 27352139 DOI: 10.1111/mve.12180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Revised: 02/26/2016] [Accepted: 03/15/2016] [Indexed: 06/06/2023]
Abstract
The impact of deltamethrin-impregnated cloth targets on Stegomyia polynesiensis (= Aedes polynesiensis) (Marks) (Diptera: Culicidae) was assessed under laboratory and semi-field settings in French Polynesia. Stegomyia polynesiensis females were released into small laboratory cages and large field cages containing either a deltamethrin-treated or an untreated navy blue cloth, and mosquito knock-down and mortality were assessed. The 24-h mortality rate in mosquitoes exposed to the insecticide-treated target in small cages was 98.0%. These mosquitoes also demonstrated significantly higher levels of knock-down than those exposed to the untreated target. Mortality in field cages was assessed at 24 and 48 h. The 24-h mortality rate in mosquitoes exposed to the control target was 31.2%, whereas that in those exposed to the deltamethrin-treated target was 54.3%. The 48-h mortality rate was also elevated in mosquitoes exposed to the deltamethrin-treated target, but this result did not differ significantly from that observed in mosquitoes exposed to the control target. The significant suppression of female S. polynesiensis by deltamethrin-treated resting targets in this study indicates that these targets could play a role in the control of an important disease vector in the South Pacific region.
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Affiliation(s)
- E W Chambers
- Department of Biology, Valdosta State University, Valdosta, GA, U.S.A
- Department of Entomology, University of Kentucky, Lexington, KY, U.S.A
| | - H C Bossin
- Medical Entomology Laboratory, Institut Louis Malardé, Papeete, French Polynesia
| | - S A Ritchie
- Medical and Veterinary Sciences, College of Public Health, Australian Institute of Tropical Health and Medicine, James Cook University, Cairns, QLD, Australia
| | - R C Russell
- Department of Medical Entomology, Sydney Medical School, University of Sydney, Sydney, NSW, Australia
| | - S L Dobson
- Department of Entomology, University of Kentucky, Lexington, KY, U.S.A
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Speare R, Bradbury RS, Croese J. A Case of Ancylostoma ceylanicum Infection Occurring in an Australian Soldier Returned from Solomon Islands. THE KOREAN JOURNAL OF PARASITOLOGY 2016; 54:533-6. [PMID: 27658607 PMCID: PMC5040074 DOI: 10.3347/kjp.2016.54.4.533] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/15/2016] [Revised: 06/17/2016] [Accepted: 06/20/2016] [Indexed: 11/23/2022]
Abstract
A 26-year-old male member of the Australian Defense Force presented with a history of central abdominal pain of 4 weeks duration and peripheral eosinophilia consistent with eosinophilic enteritis. Acute hookworm disease was diagnosed as the cause. Adult worms recovered from feces after therapy with albendazole were morphologically consistent with Ancylostoma ceylanicum. As the patient had been deployed with the Regional Assistance Mission to Solomon Islands for 6 months prior to this presentation, it is very likely that the A. ceylanicum was acquired in Solomon Islands. Until now, it has been assumed that any Ancylostoma spp. recovered from humans in Solomon Islands is A. duodenale. However, this case demonstrates that human hookworm infection acquired in the Solomon Islands could be caused by A. ceylanicum.
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Affiliation(s)
- Rick Speare
- College of Public Health, Veterinary and Medical Sciences, James Cook University, Townsville, Australia.,Tropical Health Solutions Pty Ltd, Topaz, Australia
| | - Richard Stewart Bradbury
- School of Medical and Applied Sciences, Central Queensland University, North Rockhampton, Australia
| | - John Croese
- Department of Gastroenterology and Hepatology, The Prince Charles Hospital, Brisbane, Australia
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50
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Waters EK, Hamilton AJ, Sidhu HS, Sidhu LA, Dunbar M. Zoonotic Transmission of Waterborne Disease: A Mathematical Model. Bull Math Biol 2016; 78:169-83. [DOI: 10.1007/s11538-015-0136-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2015] [Accepted: 12/16/2015] [Indexed: 01/20/2023]
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