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Ammam I, Brunet CD, Boukenaoui-Ferrouk N, Peyroux J, Berthier S, Boutonnat J, Rahal K, Bitam I, Maurin M. Francisella tularensis PCR detection in Cape hares (Lepus capensis) and wild rabbits (Oryctolagus cuniculus) in Algeria. Sci Rep 2022; 12:21451. [PMID: 36509808 PMCID: PMC9743112 DOI: 10.1038/s41598-022-25188-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Accepted: 11/25/2022] [Indexed: 12/14/2022] Open
Abstract
Tularemia is a zoonosis caused by the bacterium Francisella tularensis. Leporids are primary sources of human infections in the northern hemisphere. Africa is classically considered free of tularemia, but recent data indicate that this dogma might be wrong. We assessed the presence of this disease in wild leporids in Algeria. Between 2014 and 2018, we collected 74 leporids carcasses from spontaneously dead or hunted animals. Francisella tularensis DNA was detected by specific real-time PCR tests in 7/36 (19.44%) Cape hares (Lepus capensis) and 5/38 (13.15%) wild rabbits (Oryctolagus cuniculus). Known tularemia arthropod vectors infested half of the PCR-positive animals. At necropsy, F. tularensis-infected animals presented with an enlarged spleen (n = 12), enlarged adrenal glands (12), liver discoloration (12), hemorrhages (11), and pneumonia (11). Immunohistological examination of liver tissue from one animal was compatible with the presence of F. tularensis. Our study demonstrates the existence of tularemia in lagomorphs in Algeria. It should encourage investigations to detect this disease among the human population of this country.
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Affiliation(s)
- Imene Ammam
- grid.32139.3a0000 0004 0633 7931Institute of Veterinary Sciences, University of Blida 1, Blida, Algeria ,Laboratory of Biodiversity and Environment: Interactions, Genome, University of Sciences and Technology Houari Boumedienne, Algiers, Algeria
| | - Camille D. Brunet
- grid.4444.00000 0001 2112 9282University Grenoble Alpes, CNRS, TIMC, 38000 Grenoble, France
| | - Nouria Boukenaoui-Ferrouk
- grid.32139.3a0000 0004 0633 7931Institute of Veterinary Sciences, University of Blida 1, Blida, Algeria ,grid.420190.e0000 0001 2293 1293Laboratory of Research on Arid Zones Lands (LRZA), Faculty of Biological Sciences (FSB), Houari Boumediene University of Science and Technology (USTHB), BP 32, 16111 Bab Ezzouar, Algiers Algeria
| | - Julien Peyroux
- grid.4444.00000 0001 2112 9282University Grenoble Alpes, CNRS, TIMC, 38000 Grenoble, France
| | - Sylvie Berthier
- grid.410529.b0000 0001 0792 4829Grenoble Alpes University Hospital, 38000 Grenoble, France
| | - Jean Boutonnat
- grid.410529.b0000 0001 0792 4829Grenoble Alpes University Hospital, 38000 Grenoble, France
| | - Karim Rahal
- grid.32139.3a0000 0004 0633 7931Institute of Veterinary Sciences, University of Blida 1, Blida, Algeria
| | - Idir Bitam
- Laboratory of Biodiversity and Environment: Interactions, Genome, University of Sciences and Technology Houari Boumedienne, Algiers, Algeria ,Superior School of Food Sciences and Food Industries of Algiers, El Harrach, Algeria
| | - Max Maurin
- grid.4444.00000 0001 2112 9282University Grenoble Alpes, CNRS, TIMC, 38000 Grenoble, France ,grid.410529.b0000 0001 0792 4829Grenoble Alpes University Hospital, 38000 Grenoble, France
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Ergunay K, Mutinda M, Bourke B, Justi SA, Caicedo-Quiroga L, Kamau J, Mutura S, Akunda IK, Cook E, Gakuya F, Omondi P, Murray S, Zimmerman D, Linton YM. Metagenomic Investigation of Ticks From Kenyan Wildlife Reveals Diverse Microbial Pathogens and New Country Pathogen Records. Front Microbiol 2022; 13:932224. [PMID: 35847110 PMCID: PMC9283121 DOI: 10.3389/fmicb.2022.932224] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Accepted: 05/27/2022] [Indexed: 11/13/2022] Open
Abstract
Focusing on the utility of ticks as xenosurveillance sentinels to expose circulating pathogens in Kenyan drylands, host-feeding ticks collected from wild ungulates [buffaloes, elephants, giraffes, hartebeest, impala, rhinoceros (black and white), zebras (Grévy’s and plains)], carnivores (leopards, lions, spotted hyenas, wild dogs), as well as regular domestic and Boran cattle were screened for pathogens using metagenomics. A total of 75 host-feeding ticks [Rhipicephalus (97.3%) and Amblyomma (2.7%)] collected from 15 vertebrate taxa were sequenced in 46 pools. Fifty-six pathogenic bacterial species were detected in 35 pools analyzed for pathogens and relative abundances of major phyla. The most frequently observed species was Escherichia coli (62.8%), followed by Proteus mirabilis (48.5%) and Coxiella burnetii (45.7%). Francisella tularemia and Jingmen tick virus (JMTV) were detected in 14.2 and 13% of the pools, respectively, in ticks collected from wild animals and cattle. This is one of the first reports of JMTV in Kenya, and phylogenetic reconstruction revealed significant divergence from previously known isolates and related viruses. Eight fungal species with human pathogenicity were detected in 5 pools (10.8%). The vector-borne filarial pathogens (Brugia malayi, Dirofilaria immitis, Loa loa), protozoa (Plasmodium spp., Trypanosoma cruzi), and environmental and water-/food-borne pathogens (Entamoeba histolytica, Encephalitozoon intestinalis, Naegleria fowleri, Schistosoma spp., Toxoplasma gondii, and Trichinella spiralis) were detected. Documented viruses included human mastadenovirus C, Epstein-Barr virus and bovine herpesvirus 5, Trinbago virus, and Guarapuava tymovirus-like virus 1. Our findings confirmed that host-feeding ticks are an efficient sentinel for xenosurveillance and demonstrate clear potential for wildlife-livestock-human pathogen transfer in the Kenyan landscape.
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Affiliation(s)
- Koray Ergunay
- Walter Reed Biosystematics Unit (WRBU), Smithsonian Institution Museum Support Center, Suitland, MD, United States
- One Health Branch, Walter Reed Army Institute of Research (WRAIR), Silver Spring, MD, United States
- Department of Medical Microbiology, Virology Unit, Faculty of Medicine, Hacettepe University, Ankara, Turkey
- Department of Entomology, Smithsonian Institution, National Museum of Natural History (NMNH), Washington, DC, United States
- *Correspondence: Koray Ergunay,
| | | | - Brian Bourke
- Walter Reed Biosystematics Unit (WRBU), Smithsonian Institution Museum Support Center, Suitland, MD, United States
- One Health Branch, Walter Reed Army Institute of Research (WRAIR), Silver Spring, MD, United States
- Department of Entomology, Smithsonian Institution, National Museum of Natural History (NMNH), Washington, DC, United States
| | - Silvia A. Justi
- Walter Reed Biosystematics Unit (WRBU), Smithsonian Institution Museum Support Center, Suitland, MD, United States
- One Health Branch, Walter Reed Army Institute of Research (WRAIR), Silver Spring, MD, United States
- Department of Entomology, Smithsonian Institution, National Museum of Natural History (NMNH), Washington, DC, United States
| | - Laura Caicedo-Quiroga
- Walter Reed Biosystematics Unit (WRBU), Smithsonian Institution Museum Support Center, Suitland, MD, United States
- One Health Branch, Walter Reed Army Institute of Research (WRAIR), Silver Spring, MD, United States
- Department of Entomology, Smithsonian Institution, National Museum of Natural History (NMNH), Washington, DC, United States
| | - Joseph Kamau
- One Health Centre, Institute of Primate Research (IPR), Nairobi, Kenya
| | - Samson Mutura
- One Health Centre, Institute of Primate Research (IPR), Nairobi, Kenya
| | | | - Elizabeth Cook
- International Livestock Research Institute (ILRI), Nairobi, Kenya
| | - Francis Gakuya
- Wildlife Research and Training Institute (WRTI), Naivasha, Kenya
| | - Patrick Omondi
- Wildlife Research and Training Institute (WRTI), Naivasha, Kenya
| | - Suzan Murray
- Global Health Program, Smithsonian Conservation Biology Unit, Fort Royal, VA, United States
| | - Dawn Zimmerman
- Walter Reed Biosystematics Unit (WRBU), Smithsonian Institution Museum Support Center, Suitland, MD, United States
- One Health Branch, Walter Reed Army Institute of Research (WRAIR), Silver Spring, MD, United States
- Department of Entomology, Smithsonian Institution, National Museum of Natural History (NMNH), Washington, DC, United States
- Department of Epidemiology of Microbial Disease, Yale School of Public Health, New Haven, CT, United States
| | - Yvonne-Marie Linton
- Walter Reed Biosystematics Unit (WRBU), Smithsonian Institution Museum Support Center, Suitland, MD, United States
- One Health Branch, Walter Reed Army Institute of Research (WRAIR), Silver Spring, MD, United States
- Department of Entomology, Smithsonian Institution, National Museum of Natural History (NMNH), Washington, DC, United States
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3
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Peta V, Tantely LM, Potts R, Girod R, Pietri JE. A Francisella tularensis-Like Bacterium in Tropical Bed Bugs from Madagascar. Vector Borne Zoonotic Dis 2022; 22:58-61. [PMID: 34981990 DOI: 10.1089/vbz.2021.0079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The genus Francisella includes several highly virulent human pathogens and some tick endosymbionts. Francisella infections are acquired by humans through contact with vertebrate animal reservoirs or contaminated water or dust. The species Francisella tularensis can also be transmitted by arthropods including ticks, mosquitoes, and flies. For the first time, we describe the molecular detection of an F. tularensis-like bacterium in bed bugs from samples collected in rural Madagascar. This finding suggests a potential involvement of bed bugs in the ecology of Francisella. The role of bed bugs as possible hosts, reservoirs, or vectors of Francisella spp. should be further investigated.
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Affiliation(s)
- Vincent Peta
- Division of Basic Biomedical Sciences, Sanford School of Medicine, University of South Dakota, Vermillion, South Dakota, USA
| | - Luciano M Tantely
- Medical Entomology Unit, Institut Pasteur de Madagascar, Antananarivo, Madagascar
| | - Rashaun Potts
- Division of Basic Biomedical Sciences, Sanford School of Medicine, University of South Dakota, Vermillion, South Dakota, USA
| | - Romain Girod
- Medical Entomology Unit, Institut Pasteur de Madagascar, Antananarivo, Madagascar
| | - Jose E Pietri
- Division of Basic Biomedical Sciences, Sanford School of Medicine, University of South Dakota, Vermillion, South Dakota, USA
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Ahmad F, Farooq A, Ghani Khan MU, Shabbir MZ, Rabbani M, Hussain I. Identification of Most Relevant Features for Classification of Francisella tularensis using Machine Learning. Curr Bioinform 2021. [DOI: 10.2174/1574893615666200219113900] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:
Francisella tularensis is a stealth pathogen fatal for animals and humans.
Ease of its propagation, coupled with high capacity for ailment and death makes it a potential
candidate for biological weapon.
Objective:
Work related to the pathogen’s classification and factors affecting its prolonged
existence in soil is limited to statistical measures. Machine learning other than conventional
analysis methods may be applied to better predict epidemiological modeling for this soil-borne
pathogen.
Methods:
Feature-ranking algorithms namely; relief, correlation and oneR are used for soil
attribute ranking. Moreover, classification algorithms; SVM, random forest, naive bayes, logistic
regression and MLP are used for classification of the soil attribute dataset for Francisella
tularensis positive and negative soils.
Results:
Feature-ranking methods concluded that clay, nitrogen, organic matter, soluble salts, zinc,
silt and nickel are the most significant attributes while potassium, phosphorous, iron, calcium,
copper, chromium and sand are the least contributing risk factors for the persistence of the
pathogen. However, clay is the most significant and potassium is the least contributing attribute.
Data analysis suggests that feature-ranking using relief produced classification accuracy of 84.35%
for multilayer perceptron; 82.99% for linear regression; 80.27% for SVM and random forest; and
78.23% for naive bayes, which is better than other ranking methods. MLP outperforms other
classifiers by generating an accuracy of 84.35%, 82.99% and 81.63% for feature-ranking using
relief, correlation and oneR algorithms, respectively.
Conclusion:
These models can significantly improve accuracy and can minimize the risk of
incorrect classification. They further help in controlling epidemics and thereby minimizing the
socio-economic impact on the society.
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Affiliation(s)
- Fareed Ahmad
- Department of Computer Science and Engineering, Faculty of Electrical Engineering, University of Engineering and Technology, Lahore, Pakistan
| | - Amjad Farooq
- Department of Computer Science and Engineering, Faculty of Electrical Engineering, University of Engineering and Technology, Lahore, Pakistan
| | - Muhammad Usman Ghani Khan
- Department of Computer Science and Engineering, Faculty of Electrical Engineering, University of Engineering and Technology, Lahore, Pakistan
| | | | - Masood Rabbani
- Institute of Microbiology, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - Irshad Hussain
- Institute of Microbiology, University of Veterinary and Animal Sciences, Lahore, Pakistan
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Yeni DK, Büyük F, Ashraf A, Shah MSUD. Tularemia: a re-emerging tick-borne infectious disease. Folia Microbiol (Praha) 2021; 66:1-14. [PMID: 32989563 PMCID: PMC7521936 DOI: 10.1007/s12223-020-00827-z] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Accepted: 09/18/2020] [Indexed: 11/24/2022]
Abstract
Tularemia is a bacterial disease of humans, wild, and domestic animals. Francisella tularensis, which is a Gram-negative coccobacillus-shaped bacterium, is the causative agent of tularemia. Recently, an increase in the number of human tularemia cases has been noticed in several countries around the world. It has been reported mostly from North America, several Scandinavian countries, and certain Asian countries. The disease spreads through vectors such as mosquitoes, horseflies, deer flies, and ticks. Humans can acquire the disease through direct contact of sick animals, consumption of infected animals, drinking or direct contact of contaminated water, and inhalation of bacteria-loaded aerosols. Low infectious dose, aerosol route of infection, and its ability to induce fatal disease make it a potential agent of biological warfare. Tularemia leads to several clinical forms, such as glandular, ulceroglandular, oculoglandular, oropharyngeal, respiratory, and typhoidal forms. The disease is diagnosed through the use of culture, serology, or molecular methods. Quinolones, tetracyclines, or aminoglycosides are frequently used in the treatment of tularemia. No licensed vaccine is available in the prophylaxis of tularemia and this is need of the time and high-priority research area. This review mostly focuses on general features, importance, current status, and preventive measures of this disease.
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Affiliation(s)
- Derya Karataş Yeni
- Veterinary Control Central Research Institute, Bacterial Disease Laboratory, Ankara, Turkey
| | - Fatih Büyük
- Department of Microbiology, Veterinary Faculty, University of Kafkas, Kars, Turkey.
| | - Asma Ashraf
- Department of Zoology, Government College University, Faisalabad, Pakistan
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6
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Maurin M. Francisella tularensis, Tularemia and Serological Diagnosis. Front Cell Infect Microbiol 2020; 10:512090. [PMID: 33194778 PMCID: PMC7649319 DOI: 10.3389/fcimb.2020.512090] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Accepted: 09/29/2020] [Indexed: 11/13/2022] Open
Abstract
Tularemia is a zoonotic disease caused by the bacterium Francisella tularensis. The predominant sources, routes of infection, and clinical manifestations of human infections greatly vary according to the geographic area considered. Moreover, clinical suspicion of tularemia is often tricky because of the lack of specificity of the clinical manifestations. Because F. tularensis isolation is tedious and detection of its DNA usually requires removal of infected tissues, serological techniques are most often used for diagnostic confirmation. However, these techniques are varied and poorly standardized. The microagglutination test (MAT), the indirect immunofluorescence assay (IFA), and ELISA tests are currently the most frequently used techniques. These home-made and commercial tests are mainly used for tularemia diagnosis but also seroprevalence studies. ELISA tests detect specific antibodies within two weeks of disease evaluation, compared to 2-3 weeks for MAT and IFA. However, more false-positive results are usually reported with ELISA. The long-term persistence of anti-F. tularensis antibodies in patients with past tularemia infection hampers the diagnostic specificity of all these tests. Also, cross-reacting antibodies have been described (especially with Brucella and Yersinia species), although usually at a low level. The immunoblotting technique can highlight these serological cross-reactions. Tularemia remains an underdiagnosed disease in most endemic areas, and the clinical presentations of this disease are evolving. It is necessary to improve further speed and accuracy of tularemia diagnosis, as well as the standardization of diagnostic procedures.
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Affiliation(s)
- Max Maurin
- Centre National de Référence Francisella tularensis, Laboratoire de Bactériologie, Institut de Biologie et de Pathologie, Centre Hospitalier Universitaire Grenoble Alpes, Grenoble, France.,Laboratoire Techniques de l'Ingénierie Médicale et de la Complexité Informatique-Mathématiques et Applications (TIMC-IMAG), Université Grenoble Alpes, Centre National de la Recherche Scientifique (CNRS), Grenoble, France
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7
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Obaidat MM, Malania L, Bani Salman AE, Arner RJ, Roess AA. Seroepidemiology, Spatial Distribution, and Risk Factors of Francisella tularensis in Jordan. Am J Trop Med Hyg 2020; 103:659-664. [PMID: 32524955 DOI: 10.4269/ajtmh.19-0335] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
There is a paucity of data on Francisella tularensis in the Middle East and North Africa. This is the first countrywide study to determine the seroprevalence, spatial distribution, and risk factors for F. tularensis in Jordan. A total of 828 Jordanians were serologically tested for F. tularensis by ELISA. These individuals filled out a self-administered questionnaire to collect demographic and risk factor information. Bivariate and multivariate logistic regressions were performed to determine which variables are associated with seropositivity. The overall seroprevalence of F. tularensis was 7.7% (95% CI: 6.10-9.75). The bivariate analyses showed that age, region of residence, small ruminant ownership, and practicing horticulture were significantly associated with seropositivity, and these variables were controlled for in the multivariate analysis. The multivariate analysis showed an increased odds of seropositivity among individuals living in northern desert, middle, and northern highland areas, compared with individuals living in the drier southern area, as 7.27 (95% CI: 2.49-21.19), 3.79 (95% CI: 1.53-9.39), and 3.52 (95% CI: 1.45-388.55), respectively. Individuals owning a small ruminant had 1.86 (95% CI: 1.02-3.40) greater odds for seropositivity than individuals who do not own a small ruminant. Individuals practicing horticulture had 2.10 (95% CI: 1.20-3.66) greater odds for seropositivity than individuals who do not practice horticulture. This is the first study to address the seroprevalence of F. tularensis in Jordan and the Middle East. Further research is needed to identify clinical cases of tularemia in Jordan and to determine the circulating F. tularensis subspecies.
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Affiliation(s)
- Mohammad M Obaidat
- Department of Veterinary Pathology and Public Health, Faculty of Veterinary Medicine, Jordan University of Science and Technology, Irbid, Jordan
| | - Lile Malania
- National Center for Disease Control and Public Health, Tbilisi, Georgia
| | - Alaa E Bani Salman
- Department of Veterinary Pathology and Public Health, Faculty of Veterinary Medicine, Jordan University of Science and Technology, Irbid, Jordan
| | - Ryan J Arner
- Ryan Arner Science Consulting, LLC, Freeport, Pennsylvania
| | - Amira A Roess
- Department of Global and Community Health, College of Health and Human Services, George Mason University, Fairfax, Virginia.,Department of Global Health, Milken Institute School of Public Health, George Washington University, Washington, District of Columbia
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Ramos JM, Pérez-Tanoira R, Martín-Martín I, Prieto-Pérez L, Tefasmariam A, Tiziano G, Escudero R, Gil-Zamorano J, Gil-Gil H, Górgolas M, Jado I. Arthropod-Borne Bacteria Cause Nonmalarial Fever in Rural Ethiopia: A Cross-Sectional Study in 394 Patients. Vector Borne Zoonotic Dis 2019; 19:815-820. [PMID: 31184993 DOI: 10.1089/vbz.2018.2396] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Bacterial arthropod-borne pathogens are a common cause of fever in Africa, but their precise impact is unknown and usually underdiagnosed in the basic rural laboratories of low-resourced African countries. Our aim was to determine the prevalence of arthropod-borne bacterial diseases causing fever among malaria smear-negative patients in a rural hospital located in Ethiopia. The study population included patients aged 2 years or older; referred to Gambo Rural General Hospital (West Arsi, Ethiopia), between July and November 2013, for fever or report of fever in the previous 48 h; attending the outpatient department; and testing negative for malaria by Giemsa-stained thin blood smears. We extracted DNA from 394 whole blood samples, using reverse line blot assays of amplicons to look for bacteria from the genera: Anaplasma, Bartonella, Borrelia, Coxiella, Ehrlichia, Francisella, and Rickettsia. Thirteen patients showed presence of DNA for these pathogens: three each by Borrelia spp., the Francisella group (F. tularensis tularensis, F. tularensis holartica, and F. novicia), Rickettsia bellii, and Rickettsia Felis, and one by Bartonella rochalimae. Thus, in this rural area of Africa, febrile symptoms could be due to bacteria transmitted by arthropods. Further studies are needed to evaluate the pathogenic role of R. bellii.
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Affiliation(s)
- Jose M Ramos
- Department of Medicine and Laboratory, Gambo Rural General Hospital, Kore, Ethiopia.,Department of Internal Medicine, Hospital General Universitario de Alicante, Universidad Miguel Hernandez, Alicante, Spain
| | - Ramón Pérez-Tanoira
- Department of Medicine and Laboratory, Gambo Rural General Hospital, Kore, Ethiopia.,Division of Infectious Diseases, IIS-Fundación Jiménez Díaz, Madrid, Spain
| | - Inés Martín-Martín
- Department of Medicine and Laboratory, Gambo Rural General Hospital, Kore, Ethiopia.,Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, Maryland
| | - Laura Prieto-Pérez
- Department of Medicine and Laboratory, Gambo Rural General Hospital, Kore, Ethiopia.,Division of Infectious Diseases, IIS-Fundación Jiménez Díaz, Madrid, Spain
| | - Abraham Tefasmariam
- Department of Medicine and Laboratory, Gambo Rural General Hospital, Kore, Ethiopia
| | - Gebre Tiziano
- Department of Medicine and Laboratory, Gambo Rural General Hospital, Kore, Ethiopia
| | - Raquel Escudero
- Laboratory of Special Pathogens of the National Microbiology Center of Spain, Institute of Health Carlos III, Madrid, Spain
| | - Judit Gil-Zamorano
- Laboratory of Special Pathogens of the National Microbiology Center of Spain, Institute of Health Carlos III, Madrid, Spain
| | - Horacio Gil-Gil
- Laboratory of Special Pathogens of the National Microbiology Center of Spain, Institute of Health Carlos III, Madrid, Spain
| | - Miguel Górgolas
- Department of Medicine and Laboratory, Gambo Rural General Hospital, Kore, Ethiopia.,Division of Infectious Diseases, IIS-Fundación Jiménez Díaz, Madrid, Spain.,Department of Medicine, Universidad Autónoma de Madrid, Madrid, Spain
| | - Isabel Jado
- Laboratory of Special Pathogens of the National Microbiology Center of Spain, Institute of Health Carlos III, Madrid, Spain
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9
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Systematic Review of Important Bacterial Zoonoses in Africa in the Last Decade in Light of the 'One Health' Concept. Pathogens 2019; 8:pathogens8020050. [PMID: 30995815 PMCID: PMC6631375 DOI: 10.3390/pathogens8020050] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2019] [Revised: 04/10/2019] [Accepted: 04/11/2019] [Indexed: 02/07/2023] Open
Abstract
Zoonoses present a major public health threat and are estimated to account for a substantial part of the infectious disease burden in low-income countries. The severity of zoonotic diseases is compounded by factors such as poverty, living in close contact with livestock and wildlife, immunosuppression as well as coinfection with other diseases. The interconnections between humans, animals and the environment are essential to understand the spread and subsequent containment of zoonoses. We searched three scientific databases for articles relevant to the epidemiology of bacterial zoonoses/zoonotic bacterial pathogens, including disease prevalence and control measures in humans and multiple animal species, in various African countries within the period from 2008 to 2018. The review identified 1966 articles, of which 58 studies in 29 countries met the quality criteria for data extraction. The prevalence of brucellosis, leptospirosis, Q fever ranged from 0–40%, 1.1–24% and 0.9–28.2%, respectively, depending on geographical location and even higher in suspected outbreak cases. Risk factors for human zoonotic infection included exposure to livestock and animal slaughters. Dietary factors linked with seropositivity were found to include consumption of raw milk and locally fermented milk products. It was found that zoonoses such as leptospirosis, brucellosis, Q fever and rickettsiosis among others are frequently under/misdiagnosed in febrile patients seeking treatment at healthcare centres, leading to overdiagnoses of more familiar febrile conditions such as malaria and typhoid fever. The interactions at the human–animal interface contribute substantially to zoonotic infections. Seroprevalence of the various zoonoses varies by geographic location and species. There is a need to build laboratory capacity and effective surveillance processes for timely and effective detection and control of zoonoses in Africa. A multifaceted ‘One Health’ approach to tackle zoonoses is critical in the fight against zoonotic diseases. The impacts of zoonoses include: (1) Humans are always in contact with animals including livestock and zoonoses are causing serious life-threatening infections in humans. Almost 75% of the recent major global disease outbreaks have a zoonotic origin. (2) Zoonoses are a global health challenge represented either by well-known or newly emerging zoonotic diseases. (3) Zoonoses are caused by all-known cellular (bacteria, fungi and parasites) and noncellular (viruses or prions) pathogens. (4) There are limited data on zoonotic diseases from Africa. The fact that human health and animal health are inextricably linked, global coordinated and well-established interdisciplinary research efforts are essential to successfully fight and reduce the health burden due to zoonoses. This critically requires integrated data from both humans and animals on zoonotic diseases.
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Fulton KM, Ananchenko A, Wolfraim L, Martin S, Twine SM. Classical Immunoproteomics: Serological Proteome Analysis (SERPA) for Antigen Identification. Methods Mol Biol 2019; 2024:59-78. [PMID: 31364042 DOI: 10.1007/978-1-4939-9597-4_3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The study of the humoral immune response to infectious and chronic diseases is important for understanding the disease progression, identification of protective antigens, vaccine development, and discovery of biomarkers for early diagnosis. Proteomic approaches, including serological proteome analysis (SERPA), have been used to identify the repertoire of immunoreactive proteins in various diseases. In this chapter, we provide an outline of the SERPA approach, using the analysis of sera from mice vaccinated with a live attenuated tularemia vaccine as an example.
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Affiliation(s)
- Kelly M Fulton
- Human Health Therapeutics Research Centre, National Research Council of Canada, Ottawa, ON, Canada.
| | - Anna Ananchenko
- Human Health Therapeutics Research Centre, National Research Council of Canada, Ottawa, ON, Canada
| | | | | | - Susan M Twine
- Human Health Therapeutics Research Centre, National Research Council of Canada, Ottawa, ON, Canada
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Abstract
Tularemia has sustained seroprevalence in Eurasia, with estimates as high as 15% in endemic regions. The purpose of this report is to characterise the current epidemiology of Francisella tularensis subspecies holarctica in Georgia. Three surveillance activities are summarised: (1) acute infections captured in Georgia's notifiable disease surveillance system, (2) infectious disease seroprevalence study of military volunteers, and (3) a study of seroprevalence and risk factors in endemic regions. Descriptive analyses of demographic, exposure and clinical factors were conducted for the surveillance studies; bivariate analyses were computed to identify risk factors of seropositivity using likelihood ratio χ2 tests or Fisher's exact tests. Of the 19 incident cases reported between 2014 and August 2017, 10 were confirmed and nine met the presumptive definition; the estimated annual incidence was 0.12/100 000. The first cases of tularemia in Western Georgia were reported. Seroprevalences of antibodies for F. tularensis were 2.0% for military volunteers and 5.0% for residents in endemic regions. Exposures correlated with seropositivity included work with hay and contact with multiple types of animals. Seroprevalence studies conducted periodically may enhance our understanding of tularemia in countries with dramatically underestimated incidence rates.
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