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Boodman C, Gupta N, van Griensven J, Van Bortel W. Bartonella quintana detection among arthropods and their hosts: a systematic review and meta-analysis. Parasit Vectors 2024; 17:328. [PMID: 39095833 PMCID: PMC11295871 DOI: 10.1186/s13071-024-06413-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2024] [Accepted: 07/17/2024] [Indexed: 08/04/2024] Open
Abstract
BACKGROUND Bartonella quintana is a body louse-borne bacterium causing bacteremia and infective endocarditis. We aimed to describe B. quintana detection among arthropods and their hosts. METHODS We searched databases in PubMed Central/MEDLINE, Scopus, Embase, and Web of Science from January 1, 1915 (the year of B. quintana discovery) to January 1, 2024, to identify publications containing specific search terms relating to B. quintana detection among arthropods. Descriptive statistics and meta-analysis of pooled prevalence using random-effects models were performed for all arthropods and body and head lice. RESULTS Of 1265 records, 62 articles were included, describing 8839 body lice, 4962 head lice, and 1692 other arthropods, such as different species of fleas, bedbugs, mites, and ticks. Arthropods were collected from 37 countries, of which 28 had arthropods with B. quintana DNA. Among articles that reported B. quintana detection among individual arthropods, 1445 of 14,088 (0.1026, 95% CI [0.0976; 0.1077]) arthropods tested positive for B. quintana DNA, generating a random-effects model global prevalence of 0.0666 (95% CI [0.0426; 0.1026]). Fifty-six studies tested 8839 body lice, of which 1679 had B. quintana DNA (0.1899, 95% CI [0.1818; 0.1983]), generating a random-effects model pooled prevalence of 0.2312 (95% CI [0.1784; 0.2843]). Forty-two studies tested 4962 head lice, of which 390 head lice from 20 studies originating from 11 different countries had B. quintana DNA (0.0786, 95% CI [0.0713; 0.0864]). Eight studies detected B. quintana DNA exclusively on head lice. Five studies reported greater B. quintana detection on head lice than body lice; all originated from low-resource environments. CONCLUSIONS Bartonella quintana is a vector-borne bacterium with a global distribution, disproportionately affecting marginalized populations. Bartonella quintana DNA has been detected in many different arthropod species, though not all of these arthropods meet criteria to be considered vectors for B. quintana transmission. Body lice have long been known to transmit B. quintana. A limited number of studies suggest that head lice may also act as possible vectors for B. quintana in specific low-resource contexts.
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Affiliation(s)
- Carl Boodman
- University of Manitoba, Winnipeg, MB, Canada.
- Institute of Tropical Medicine, Antwerp, Belgium.
- University of Antwerp, Antwerp, Belgium.
| | - Nitin Gupta
- Institute of Tropical Medicine, Antwerp, Belgium
- University of Antwerp, Antwerp, Belgium
- Department of Infectious Disease, Kasturba Medical College, Manipal Academy of Higher Education, Manipal, India
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Mirzajanzadeh F, Karami M, Gorgani-Firouzjaee T, Babapour R, Jafarzadeh J, Jalilnavaz-Novin M. High mitochondrial gene diversity of Pediculus humanus capitis among children in northern Iran. Trans R Soc Trop Med Hyg 2024:trae040. [PMID: 38895866 DOI: 10.1093/trstmh/trae040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Revised: 03/19/2024] [Accepted: 06/01/2024] [Indexed: 06/21/2024] Open
Abstract
BACKGROUND The head louse, Pediculus humanus capitis, is an obligate ectoparasite and its infestation remains a major public health issue worldwide. Determining the genetic characteristics of the existing clades is essential to identify the population structure and to develop head lice-control programs. Hence, we aimed to investigate the genetic diversity of head lice among infested individuals in northern Iran. METHODS Adult head lice were collected from 100 infested individuals referring to the health centers throughout five geographical regions in Mazandaran Province, Iran. Partial fragments of the mitochondrial cytb gene were amplified by PCR, then consequently sequenced. RESULTS The results of the phylogenetic tree of collected head lice confirmed the existence of two clades, A and B, in the studied areas. Thirteen haplotypes were detected in the studied populations, of which 11 were novel haplotypes. Clade A was the dominant form and accounted for 75% of samples, while clade B included the rest. Haplotype and nucleotide diversity were 0.999 and 0.0411, respectively. CONCLUSIONS Clade A and B of Pediculus humanus capitis exist among the human populations of northern Iran. We observed high genotypic diversity of this head lice.
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Affiliation(s)
- Fayaz Mirzajanzadeh
- Student Research Committee, Babol University of Medical Sciences, Ganj Afrooz Ave., Babol 47176-47745, Iran
| | - Mohsen Karami
- Department of Mycology and Parasitology, School of Medicine, Babol University of Medical Sciences, Babol, Ganj Afrooz Ave., Babol 47176-47745, Iran, Infectious Diseases and Tropical Medicine Research Center, Health Research Institute, Babol University of Medical Sciences, Ganj Afrooz Ave., Babol 47176-47745, Iran
| | - Tahmineh Gorgani-Firouzjaee
- Infectious Diseases and Tropical Medicine Research Center, Health Research Institute, Babol University of Medical Sciences, Ganj Afrooz Ave., Babol 47176-47745, Iran
| | - Rahman Babapour
- Babol Health Center, Babol University of Medical Sciences, Ganj Afrooz Ave., Babol 47176-47745, Iran
| | - Jalal Jafarzadeh
- Department of Mycology and Parasitology, School of Medicine, Babol University of Medical Sciences, Babol, Ganj Afrooz Ave., Babol 47176-47745, Iran, Infectious Diseases and Tropical Medicine Research Center, Health Research Institute, Babol University of Medical Sciences, Ganj Afrooz Ave., Babol 47176-47745, Iran
| | - Mohamad Jalilnavaz-Novin
- Smart University of Medical Sciences, No 3, 1st Alley, Sarafraz St., Shaheed Beheshti St., Tehran 1416634793, Iran
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Mukhtar MU, Mahmood MA, Fayyaz Z, Klinpakdee K, Abdullah M. Opening the Black Box of Host Range, Vectorial Diversity, and Genetic Variants of Genus Anaplasma: The Contributing Factors Toward Its Zoonosis. Vector Borne Zoonotic Dis 2024; 24:265-273. [PMID: 38227393 DOI: 10.1089/vbz.2023.0043] [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] [Indexed: 01/17/2024] Open
Abstract
Background: Genus Anaplasma of the family Anaplasmataceae possesses bacteria of hematopoietic origin, which are obligate intracellular Gram-negative bacteria transmitted mainly by tick vectors. The members of this group of infectious agents are not new as etiological agents of animal diseases worldwide. However, now, reports of their zoonotic potential have gained currency to study these pathogens. The emergence of new species of Anaplasma and the spread of existing species to new areas and hosts highlight the importance of monitoring and improving diagnostic and treatment options for zoonotic diseases caused by Anaplasma. Conclusion: This review focuses on the general and distinctive characteristics of Anaplasma spp., with particular emphasis on the novel species and their diverse spectrum of hosts as potential risk factors impacting its emerging zoonosis.
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Affiliation(s)
- Muhammad Uzair Mukhtar
- Department of Medical Entomology and Parasitology, Institute of Public Health, Lahore, Pakistan
| | - Muhammad Asif Mahmood
- Department of Medical Entomology and Parasitology, Institute of Public Health, Lahore, Pakistan
| | - Zahra Fayyaz
- Department of Infectious Diseases, Institute of Public Health, Lahore, Pakistan
| | - Kanoknaphat Klinpakdee
- Faculty of Veterinary Medicine, Rajamangala University of Technology Tawan-Ok, Chonburi, Thailand
| | - Muhammad Abdullah
- Department of Paramedical Education, Institute of Public Health, Lahore, Pakistan
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Kamani J, Irene S, Nachum-Biala Y, Shand M, Harrus S. Phylogenetic and network analysis of Pediculus humanus in Nigeria reveal the presences of clade E body lice and novel haplotypes. Parasitol Res 2023; 122:3087-3100. [PMID: 37847393 DOI: 10.1007/s00436-023-07999-w] [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: 05/02/2023] [Accepted: 09/27/2023] [Indexed: 10/18/2023]
Abstract
An investigation was conducted for the first time to determine the prevalence and genetic diversity of human lice, for the first time in Nigeria, using conventional PCR and sequencing methods. Three mitochondrial genes, cytochrome oxidase subunit 1 (cox1), cytochrome b (cytb), and 12S rRNA of Nigerian human lice, were amplified, sequenced, and analyzed. Overall, high prevalence (72.5%; 103/142) of lice infestation was recorded among the examined volunteers. Head lice infestation was more common 63 (61.2%) than body lice infestation 34 (33.0%). Co-infestation with both head and body lice was recorded in six humans (5.8%). The Nigerian human lice specimens were placed mostly into clade A with few in clade E, including body lice for the first time. Six, three, and eight haplotypes of Nigerian human lice were obtained for the cytb, cox1, and 12S rRNA genes, respectively. Additionally, one (E51), three (A31, A32, and E5), and six (A20, A21, A23, A24, A30, and E1) novel haplotypes were recorded for cox1, cytb, and 12S rRNA, respectively, from the Nigerian specimens which were corroborated by the ML phylogenetic trees and MJ network analyses. Genetic diversity indices indicate minimal variation in the parameters analyzed among the clades of the three genes. However, a statistically significant Snn test, negative Tajima's D test for clade A (cox1 and 12S rRNA genes), and negative Fu and Li's D test in clade A for cox1 gene indicate a geographical structure and the signature of population expansion of the Nigerian human lice. The findings from this study provide additional data on the human lice structure in Africa.
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Affiliation(s)
- Joshua Kamani
- Parasitology Division, National Veterinary Research Institute (NVRI), Vom, Plateau State, PMB 01, Nigeria.
| | - Sacristán Irene
- Animal Health Research Centre, National Institute for Agricultural and Food Research and Technology (INIA), Centro Superior de Investigaciones Científicas (CSIC), Valdeolmos, Madrid, Spain
| | - Yaarit Nachum-Biala
- Koret School of Veterinary Medicine, The Hebrew University of Jerusalem, Rehovot, Israel
| | - Mike Shand
- School of Geographical and Earth Sciences, University of Glasgow, Glasgow, UK
| | - Shimon Harrus
- Koret School of Veterinary Medicine, The Hebrew University of Jerusalem, Rehovot, Israel
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Diarra AZ, Kelly P, Davoust B, Parola P. Tick-Borne Diseases of Humans and Animals in West Africa. Pathogens 2023; 12:1276. [PMID: 38003741 PMCID: PMC10675719 DOI: 10.3390/pathogens12111276] [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: 08/18/2023] [Revised: 10/11/2023] [Accepted: 10/13/2023] [Indexed: 11/26/2023] Open
Abstract
Ticks are a significant group of arthropod vectors that transmit a large variety of pathogens responsible for human and animal diseases worldwide. Ticks are the second biggest transmitters of vector-borne diseases, behind mosquitoes. However, in West Africa, there is often only limited knowledge of tick-borne diseases. With the scarcity of appropriate diagnostic services, the prevalence of tick-borne diseases is generally underestimated in humans. In this review, we provide an update on tick-borne pathogens reported in people, animals and ticks in West Africa by microscopic, immunological and molecular methods. A systematic search was conducted in PubMed and Google Scholar. The selection criteria included all studies conducted in West Africa reporting the presence of Rickettsia, Borrelia, Anaplasma, Ehrlichia, Bartonella, Coxiella burnetii, Theileria, Babesia, Hepatozoon and Crimean-Congo haemorrhagic fever viruses in humans, animals or ticks. Our intention is to raise awareness of tick-borne diseases amongst human and animal health workers in West Africa, and also physicians working with tourists who have travelled to the region.
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Affiliation(s)
- Adama Zan Diarra
- IHU-Méditerranée Infection, 13005 Marseille, France; (A.Z.D.); (B.D.)
- Aix Marseille Univ, IRD, AP-HM, SSA, VITROME, 13005 Marseille, France
| | - Patrick Kelly
- Ross University School of Veterinary Medicine, Basseterre P.O. Box 334, Saint Kitts and Nevis;
| | - Bernard Davoust
- IHU-Méditerranée Infection, 13005 Marseille, France; (A.Z.D.); (B.D.)
- Aix Marseille Univ, IRD, AP-HM, MEPHI, 13005 Marseille, France
| | - Philippe Parola
- IHU-Méditerranée Infection, 13005 Marseille, France; (A.Z.D.); (B.D.)
- Aix Marseille Univ, IRD, AP-HM, SSA, VITROME, 13005 Marseille, France
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Tian J, Liu J, Lu M, Chen X, Li K. Molecular evidence of Anaplasma spp. in blood-sucking flies from China and identification of a putative novel Anaplasma species. Microb Pathog 2023; 183:106318. [PMID: 37619912 DOI: 10.1016/j.micpath.2023.106318] [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: 06/06/2023] [Revised: 08/18/2023] [Accepted: 08/22/2023] [Indexed: 08/26/2023]
Abstract
Tabanids and stomoxes are important mechanical vectors for the transmission of pathogens. Although the agents they transmitted have been well studied, bacteria of the genus Anaplasma harbored by these flies have never been reported in China. In this study, 262 blood-sucking flies (128 Stomoxys calcitrans, 45 Tabanus birmanicus, 69 Tabanus hypomacros, and 20 Tabanus taiwanus) were collected from the Wuhan and Nanping cities of China. Anaplasma marginale, Anaplasma bovis, and Candidatus Anaplasma cinensis are detected in S. calcitrans from Wuhan City, with positive rates of 15.63%, 1.56%, and 7.81%, respectively. Out of our expectations, a putative novel Anaplasma species was identified in all three tabanid species (40.00% in T. birmanicus, 15.94% in T. hypomacros, and 10.00% in T. taiwanus) from Nanping City. The 16 S rRNA and groEL gene sequences have highest 99.37-99.75% and 91.46% identities to A. marginale, while the gltA gene sequences have highest 88.34% identity to Anaplasma centrale. In the phylogenetic trees, these strains form a distinct clade. Herein we name it "Candidatus Anaplasma nanpingensis". The present study shows the existence of multiple Anaplasma species in blood-sucking flies in China. This may be the first report that blood-sucking flies harbor Anaplasma in China.
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Affiliation(s)
- Junhua Tian
- Wuhan Center for Disease Control and Prevention, 430024, Wuhan City, Hubei Province, China
| | - Jing Liu
- Wuhan Center for Disease Control and Prevention, 430024, Wuhan City, Hubei Province, China
| | - Miao Lu
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, 102206, Changping District, Beijing City, China
| | - Xiaomin Chen
- Wuhan Center for Disease Control and Prevention, 430024, Wuhan City, Hubei Province, China
| | - Kun Li
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, 102206, Changping District, Beijing City, China.
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Feldmeier H. Head lice as vectors of pathogenic microorganisms. Trop Med Health 2023; 51:53. [PMID: 37730694 PMCID: PMC10510260 DOI: 10.1186/s41182-023-00545-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Accepted: 09/09/2023] [Indexed: 09/22/2023] Open
Abstract
Body lice and head lice are the most common ectoparasites of humans. Head lice (Pediculus humanus capitis) occur worldwide in children and their caretakers, irrespective of their social status. In contrast, body lice (Pediculus humanus corporis) are confined to marginalized population groups in countries of the Global South, homeless people, and refugees. Body lice are known to transmit an array of bacterial pathogens, such as R. prowazekii, R. rickettsii, C. burneti, B. quintana, B. recurrentis, and Y. pestis. The vector capacity of head lice is still a matter of debate. The objective of the review was to scrutinize the existing evidence on the vector capacity of head lice for the transmission of bacterial pathogens. The PUBMED database was searched using a combination of the terms "pediculus humanus" OR "body lice" OR "head lice" AND "pathogen" OR "Rickettsia prowazekii" OR "Bartonella quintana" OR "Borrelia recurrentis" OR "Coxiella burneti" without a time limit. Data from epidemiological studies as well as historical observations demonstrate that body lice and head lice can carry the same array of pathogens. Since the presence of a bacterial pathogen in an arthropod is not sufficient to state that it can be transmitted to humans, and since experimental models are lacking, as yet one cannot conclude with certainty that head lice serve as vectors, although this review presents circumstantial evidence that they do. Adequately designed experimental and epidemiological studies are needed to ascertain the exact transmission potential of head lice.
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Affiliation(s)
- Hermann Feldmeier
- Institute of Microbiology, Infectious Diseases and Immunology, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Campus Benjamin Franklin, Hindenburgdamm 30, 12203, Berlin, Germany.
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Deng YP, Fu YT, Yao C, Shao R, Zhang XL, Duan DY, Liu GH. Emerging bacterial infectious diseases/pathogens vectored by human lice. Travel Med Infect Dis 2023; 55:102630. [PMID: 37567429 DOI: 10.1016/j.tmaid.2023.102630] [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: 05/12/2023] [Revised: 07/02/2023] [Accepted: 08/08/2023] [Indexed: 08/13/2023]
Abstract
Human lice have always been a major public health concern due to their vector capacity for louse-borne infectious diseases, like trench fever, louse-borne relapsing fever, and epidemic fever, which are caused by Bartonella quintana, Borrelia recurrentis, and Rickettsia prowazekii, respectively. Those diseases are currently re-emerging in the regions of poor hygiene, social poverty, or wars with life-threatening consequences. These louse-borne diseases have also caused outbreaks among populations in jails and refugee camps. In addition, antibodies and DNAs to those pathogens have been steadily detected in homeless populations. Importantly, more bacterial pathogens have been detected in human lice, and some have been transmitted by human lice in laboratories. Here, we provide a comprehensive review and update on louse-borne infectious diseases/bacterial pathogens.
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Affiliation(s)
- Yuan-Ping Deng
- Research Center for Parasites & Vectors, College of Veterinary Medicine, Hunan Agricultural University, Changsha, Hunan, China
| | - Yi-Tian Fu
- Research Center for Parasites & Vectors, College of Veterinary Medicine, Hunan Agricultural University, Changsha, Hunan, China; Department of Parasitology, Xiangya School of Basic Medicine, Central South University, Changsha, Hunan, China
| | - Chaoqun Yao
- Department of Biomedical Sciences and One Health Center for Zoonoses and Tropical Veterinary Medicine, Ross University School of Veterinary Medicine, Basseterre, Saint Kitts and Nevis.
| | - Renfu Shao
- Centre for Bioinnovation, School of Science, Technology and Engineering, University of the Sunshine Coast, Sippy Downs, Australia
| | - Xue-Ling Zhang
- Research Center for Parasites & Vectors, College of Veterinary Medicine, Hunan Agricultural University, Changsha, Hunan, China
| | - De-Yong Duan
- Research Center for Parasites & Vectors, College of Veterinary Medicine, Hunan Agricultural University, Changsha, Hunan, China
| | - Guo-Hua Liu
- Research Center for Parasites & Vectors, College of Veterinary Medicine, Hunan Agricultural University, Changsha, Hunan, China.
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Wu YL, Hu SF, Zhang XL, Wang HM, Pan HY, Liu GH, Deng YP. Complete bacterial profile and potential pathogens of cat fleas Ctenocephalides felis. Acta Trop 2023; 243:106923. [PMID: 37080265 DOI: 10.1016/j.actatropica.2023.106923] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 03/23/2023] [Accepted: 04/07/2023] [Indexed: 04/22/2023]
Abstract
Fleas are important ectoparasites and vectors associated with a wide range of pathogenic diseases, posing threats to public health concerns, especially cat fleas that spread worldwide. Understanding the microbial components is essential due to cat fleas are capable of transmitting pathogens to humans, causing diseases like plague and murine typhus. In the present study, metagenomic next-generation sequencing was applied to obtain the complete microbiota and related functions in the gut of Ctenocephalides felis. A total of 1,870 species was taxonomically recognized including 1,407 bacteria, 365 eukaryotes, 69 viruses, and 29 archaea. Proteobacteria was the dominant phylum among the six samples. Pathogens Rickettsia felis, Acinetobacter baumannii, Coxiella burnetii, and Anaplasma phagocytophilum were taxonomically identified and had high abundances in all samples. The resistance gene MexD was predominant in microbial communities of all cat fleas. We also performed epidemiological surveys of pathogens R. felis, A. baumannii, C. burnetii, and A. phagocytophilum among 165 cat fleas collected from seven provinces in China, while only the DNAs of R. felis (38/165, 23.03%) and C. burnetii (2/165, 1.21%) were obtained. The data provide new insight and understanding of flea intestinal microbiota and provided novel information for preventing and controlling fleas and their transmitted diseases.
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Affiliation(s)
- Ya-Li Wu
- Research Center for Parasites & Vectors, College of Veterinary Medicine, Hunan Agricultural University, Changsha, Hunan Province, 410128, China
| | - Shi-Feng Hu
- Research Center for Parasites & Vectors, College of Veterinary Medicine, Hunan Agricultural University, Changsha, Hunan Province, 410128, China
| | - Xue-Ling Zhang
- Research Center for Parasites & Vectors, College of Veterinary Medicine, Hunan Agricultural University, Changsha, Hunan Province, 410128, China
| | - Hui-Mei Wang
- Research Center for Parasites & Vectors, College of Veterinary Medicine, Hunan Agricultural University, Changsha, Hunan Province, 410128, China
| | - Hai-Yu Pan
- Research Center for Parasites & Vectors, College of Veterinary Medicine, Hunan Agricultural University, Changsha, Hunan Province, 410128, China
| | - Guo-Hua Liu
- Research Center for Parasites & Vectors, College of Veterinary Medicine, Hunan Agricultural University, Changsha, Hunan Province, 410128, China.
| | - Yuan-Ping Deng
- Research Center for Parasites & Vectors, College of Veterinary Medicine, Hunan Agricultural University, Changsha, Hunan Province, 410128, China.
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Head Lice Infestation in Pre-High School Girls, Lak Hok Suburban Area, Pathum Thani Province, in Central Thailand. J Parasitol Res 2023; 2023:8420859. [PMID: 36733373 PMCID: PMC9889157 DOI: 10.1155/2023/8420859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 12/31/2022] [Accepted: 01/12/2023] [Indexed: 01/25/2023] Open
Abstract
This is a cross-sectional descriptive survey to determine the prevalence of lice infestation in a pre-high school, Lak Hok subdistrict, Pathum Thani Province, in central part of Thailand. The knowledge, attitudes, and practices of parents/guardians toward head lice in female children during February-April 2020 were evaluated. A total of 83 out of 111 parents (74.8%) agreed to complete consent forms and questionnaires. The prevalence of pediculosis found in this study was 68.7%. The infestation was found in the primary school level (87.5%), which was significantly higher than pre-primary school (29.6%; p < 0.05). Itching scalp was revealed in 93.0% of pediculosis. The results showed that occupation, religion, education, and income showed no significant difference between lice infested and non-infested students (p > 0.05). There was no significant association between sex, occupation, religion, education, income, status of parents, and family size among lice infested and non-infested students (p > 0.05). The parents/guardians showed the middle level of knowledge concerning with pediculosis capitis (66.8%). The lack of knowledge leading, first, to the belief that pediculosis does not need any treatment (89.2%), followed by boys getting head lice more frequently than girls (85.5%), and the belief that sharing infested combs, brushes, or hair ribbons does not result in lice transmission (79.9%). More than 75% of the parents/guardians had experienced infestation of head lice and showed themselves willing and able to diagnose and treat their family. However, 50.6% of them did not feel shame when their children were infested with head lice. Children washing their hair by themselves were found to be a significant factor in infestation (88.5%). High rate of pediculosis in this suburban school needs more intensive care by parents/guardians and teachers. Furthermore, improvement strategies to prevent and control lice in the school need to be more specifically planned and scheduled by teachers and health administrators.
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Ouarti B, Fonkou DMM, Houhamdi L, Mediannikov O, Parola P. Lice and lice-borne diseases in humans in Africa: a narrative review. Acta Trop 2022; 237:106709. [PMID: 36198330 DOI: 10.1016/j.actatropica.2022.106709] [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: 07/27/2022] [Revised: 09/30/2022] [Accepted: 10/01/2022] [Indexed: 01/18/2023]
Abstract
Lice are host-specific insects. Human lice include Pediculus humanus humanus (body lice) which are known to be vectors of serious human bacterial infectious diseases including epidemic typhus, relapsing fever, trench fever and plague; Pediculus humanus capitis (head lice) that frequently affect children; and Pthirus pubis, commonly known as crab lice. In Africa, human infections transmitted by lice remained poorly known and therefore, underestimated, perhaps due to the lack of diagnostic tools and professional knowledge. In this paper we review current knowledge of the microorganisms identified in human lice in the continent of Africa, in order to alert health professionals to the importance of recognising the risk of lice-related diseases.
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Affiliation(s)
- Basma Ouarti
- Aix Marseille Univ, IRD, AP-HM, SSA, VITROME, Marseille, France; IHU-Méditerranée Infection, Marseille, France.
| | | | - Linda Houhamdi
- Aix Marseille Univ, IRD, AP-HM, SSA, VITROME, Marseille, France; IHU-Méditerranée Infection, Marseille, France.
| | - Oleg Mediannikov
- IHU-Méditerranée Infection, Marseille, France; IRD, AP-HM, MEPHI, Aix Marseille University, Marseille, France.
| | - Philippe Parola
- Aix Marseille Univ, IRD, AP-HM, SSA, VITROME, Marseille, France; IHU-Méditerranée Infection, Marseille, France.
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Mediannikov O, Bechah Y, Amanzougaghene N, Lepidi H, Bassene H, Sambou M, Lienhard C, Benkacimi L, Dieme C, Sokhna C, Fenollar F, Raoult D. Booklice Liposcelis bostrychophila naturally infected by Rickettsia felis cause fever and experimental pneumonia in mammals. J Infect Dis 2022; 226:1075-1083. [PMID: 35776143 DOI: 10.1093/infdis/jiac282] [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: 09/16/2021] [Accepted: 06/30/2022] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Rickettsia felis is emergent in tropical areas. Despite its high morbidity, its natural history has not yet been fully determined. We investigated the role of the common household booklouse, Liposcelis bostrychophila, recently found to harbour R. felis. METHODS Blood samples from 372 febrile patients from Senegalese villages, as well as nasal and skin samples from 264 asymptomatic individuals, were tested for cat flea-associated and booklice-associated strains of R. felis. Dust samples from beds were collected to isolate booklice and R. felis. Mice were infected with aerosol of R. felis strain from naturally infected booklice. RESULTS Forty febrile patients (11%) were infected by R. felis, including 26 (7%) by the booklice-associated strain. Nine nasal samples (3.4%) and 28 skin samples (10.6%) contained R. felis, including seven and 24, respectively, with the booklice-associated strain. The presence of live L. bostrychophila was observed in 32 dust samples (16.8%); R. felis was identified in 62 dust samples (32.5%). Several mice samples were positive for R. felis; interstitial lymphohistiocytic infiltrates were identified in lungs. CONCLUSIONS L. bostrychophila may be a reservoir of R. felis. The booklice-associated strain is pathogenic in mammals causing pneumonia. Human infection may be acquired via inhalation of infected booklice particles.
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Affiliation(s)
- Oleg Mediannikov
- Aix Marseille Univ, IRD, AP-HM, MEPHII, Marseille, France.,IHU-Méditerranée Infection, Marseille, France
| | - Yassina Bechah
- Aix Marseille Univ, IRD, AP-HM, MEPHII, Marseille, France.,IHU-Méditerranée Infection, Marseille, France
| | - Nadia Amanzougaghene
- Aix Marseille Univ, IRD, AP-HM, MEPHII, Marseille, France.,IHU-Méditerranée Infection, Marseille, France
| | - Hubert Lepidi
- Aix Marseille Univ, IRD, AP-HM, MEPHII, Marseille, France.,IHU-Méditerranée Infection, Marseille, France
| | | | - Masse Sambou
- VITROME, Campus International UCAD-IRD, Dakar, Senegal
| | | | - Linda Benkacimi
- Aix Marseille Univ, IRD, AP-HM, SSA, VITROME, Marseille, France
| | | | - Cheikh Sokhna
- Aix Marseille Univ, IRD, AP-HM, SSA, VITROME, Marseille, France
| | - Florence Fenollar
- IHU-Méditerranée Infection, Marseille, France.,Aix Marseille Univ, IRD, AP-HM, SSA, VITROME, Marseille, France
| | - Didier Raoult
- Aix Marseille Univ, IRD, AP-HM, MEPHII, Marseille, France.,IHU-Méditerranée Infection, Marseille, France
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13
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Fu YT, Yao C, Deng YP, Elsheikha HM, Shao R, Zhu XQ, Liu GH. Human pediculosis, a global public health problem. Infect Dis Poverty 2022; 11:58. [PMID: 35619191 PMCID: PMC9134731 DOI: 10.1186/s40249-022-00986-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Accepted: 05/11/2022] [Indexed: 12/04/2022] Open
Abstract
Background Human pediculosis is caused by hematophagous lice, which are transmitted between individuals via direct and/or indirect contact. Despite the public health importance of louse infestation, information concerning the global burden of pediculosis and the epidemiological landscape of louse-borne diseases is limited. The aim of this review was to summarize the biology, epidemiology, diagnosis, and control of lice infestation in humans. We also discussed the latest advances in molecular taxonomy and molecular genetics of lice. Methods We searched five electronic bibliographic databases (PubMed, ScienceDirect, CNKI, VIP Chinese Journal Database, and Wanfang Data) and followed a standard approach for conducting scoping reviews to identify studies on various aspects of human lice. Relevant information reported in the identified studies were collated, categorized, and summarized. Results A total of 282 studies were eligible for the final review. Human pediculosis remains a public health issue affecting millions of people worldwide. Emerging evidence suggests that head lice and body lice should be considered conspecific, with different genotypes and ecotypes. Phylogenetic analysis based on mitochondrial (mt) cytb gene sequences identified six distinct clades of lice worldwide. In addition to the direct effect on human health, lice can serve as vectors of disease-causing pathogens. The use of insecticides plays a crucial role in the treatment and prevention of louse infestation. Genome sequencing has advanced our knowledge of the genetic structure and evolutionary biology of human lice. Conclusions Human pediculosis is a public health problem affecting millions of people worldwide, particularly in developing countries. More progress can be made if emphasis is placed on the use of emerging omics technologies to elucidate the mechanisms that underpin the physiological, ecological, and evolutionary aspects of lice. Graphic Abstract ![]()
Supplementary Information The online version contains supplementary material available at 10.1186/s40249-022-00986-w.
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Affiliation(s)
- Yi-Tian Fu
- Research Center for Parasites and Vectors, College of Veterinary Medicine, Hunan Agricultural University, Changsha, Hunan, China
| | - Chaoqun Yao
- Department of Biomedical Sciences and One Health Center for Zoonoses and Tropical Veterinary Medicine, Ross University School of Veterinary Medicine, Basseterre, Saint Kitts and Nevis.
| | - Yuan-Ping Deng
- Research Center for Parasites and Vectors, College of Veterinary Medicine, Hunan Agricultural University, Changsha, Hunan, China
| | - Hany M Elsheikha
- Faculty of Medicine and Health Sciences, School of Veterinary Medicine and Science, University of Nottingham, Loughborough, LE12 5RD, UK
| | - Renfu Shao
- Centre for Bioinnovation, School of Science, Technology and Engineering, University of the Sunshine Coast, Sippy Downs, QLD, 4556, Australia
| | - Xing-Quan Zhu
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, 030801, Shanxi, China. .,Key Laboratory of Veterinary Public Health of Higher Education of Yunnan Province, College of Veterinary Medicine, Yunnan Agricultural University, Kunming, Yunnan, 650201, People's Republic of China.
| | - Guo-Hua Liu
- Research Center for Parasites and Vectors, College of Veterinary Medicine, Hunan Agricultural University, Changsha, Hunan, China.
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14
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Santibáñez S, Caruz A, Márquez-Constán J, Portillo A, Oteo JA, Márquez FJ. Serologic study of Bartonella sp. infection among human population of Southern Spain. ENFERMEDADES INFECCIOSAS Y MICROBIOLOGIA CLINICA (ENGLISH ED.) 2022; 40:179-182. [PMID: 35473988 DOI: 10.1016/j.eimce.2020.10.012] [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: 08/28/2020] [Accepted: 10/09/2020] [Indexed: 06/14/2023]
Abstract
INTRODUCTION The purpose of this study was to determine the prevalence of IgG antibodies against Bartonella sp. in a randomly selected sample from the population of the patients of North Sanitary District of Jaén. METHODS We used a commercially available immunofluorescent test (Focus-Technology IFA Bartonella quintana and B. henselae test). RESULTS Six hundred five healthy individuals were divided by sex into three age groups. We detected that 13.55% and 11.07% subjects were IgG seropositive to B. henselae and B. quintana, respectively. CONCLUSIONS Our data show that the prevalence of both Bartonella species in Andalusia (Southern Spain) is relatively high. No statistical difference in the seropositivity was observed among these groups. In both cases, the IgG antibody titers ranged from 1/128 to 1/512.
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Affiliation(s)
- Sonia Santibáñez
- Departamento de Enfermedades Infecciosas, Hospital Universitario San Pedro-Centro de Investigación Biomédica de La Rioja (CIBIR), Logroño, Spain
| | - Antonio Caruz
- Departamento de Biología Experimental, Universidad de Jaén, Jaén, Spain
| | | | - Aránzazu Portillo
- Departamento de Enfermedades Infecciosas, Hospital Universitario San Pedro-Centro de Investigación Biomédica de La Rioja (CIBIR), Logroño, Spain
| | - Jose Antonio Oteo
- Departamento de Enfermedades Infecciosas, Hospital Universitario San Pedro-Centro de Investigación Biomédica de La Rioja (CIBIR), Logroño, Spain
| | - Francisco J Márquez
- Departamento de Biología Animal, Biología Vegetal y Ecología, Universidad de Jaén, Jaén, Spain.
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15
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Amanzougaghene N, Charlier P, Fenollar F, Raoult D, Mediannikov O. Putative native South Amerindian origin of head lice clade F: evidence from head lice nits infesting human shrunken heads. Sci Rep 2022; 12:4307. [PMID: 35279677 PMCID: PMC8918326 DOI: 10.1038/s41598-022-08176-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Accepted: 02/17/2022] [Indexed: 12/11/2022] Open
Abstract
The head louse, Pediculus humanus capitis, is a strictly obligate human ectoparasite with a long history of association with humans. Here, 17 ancient head lice nits were recovered from six shrunken human heads (known as tsantsas) of individuals from the Shuar/Jivaro tribe, a native Amazonian population from Ecuador, South America. Cytochrome b DNA analysis revealed the presence of three known mitochondrial clades. Clade A was the most frequent (52.94%), followed by F (35.29%), and B (11.76%). Eleven haplotypes were found in 17 samples, and nine of the haplotypes were novel, indicating an unusually high genetic diversity. In conclusion, we confirmed the presence of clades A, B and F in South Amerindian population. Moreover, the description of clade F, together with its previous reports in another Amerindian population from French Guiana, strongly support the hypothesis of a native South American origin for this clade, and probably derived from clade B which was carried to America by an ancestral Eurasian Beringian population. Further support to our conclusion and new insights might come from the analysis of a larger collection of modern and ancient native American lice.
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Affiliation(s)
- Nadia Amanzougaghene
- IHU-Méditerranée Infection, Marseille, France
- Aix Marseille Université, IRD, AP-HM, MEPHI, Marseille, France
| | - Philippe Charlier
- Laboratory «Anthropology, Archaeology, Biology» (LAAB), Université Paris-Saclay, UVSQ, 78180, Montigny-le-Bretonneux, France
- Musée du quai Branly - Jacques Chirac, 222 rue de l'Université, 75007, Paris, France
| | - Florence Fenollar
- IHU-Méditerranée Infection, Marseille, France
- Aix Marseille Université, IRD, AP-HM, SSA, VITROME, Marseille, France
| | - Didier Raoult
- IHU-Méditerranée Infection, Marseille, France
- Aix Marseille Université, IRD, AP-HM, MEPHI, Marseille, France
| | - Oleg Mediannikov
- IHU-Méditerranée Infection, Marseille, France.
- Aix Marseille Université, IRD, AP-HM, MEPHI, Marseille, France.
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16
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Hammoud A, Louni M, Missé D, Cortaredona S, Fenollar F, Mediannikov O. Phylogenetic relationship between the endosymbiont "Candidatus Riesia pediculicola" and its human louse host. Parasit Vectors 2022; 15:73. [PMID: 35248159 PMCID: PMC8898481 DOI: 10.1186/s13071-022-05203-z] [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: 09/10/2021] [Accepted: 02/14/2022] [Indexed: 11/23/2022] Open
Abstract
Background The human louse (Pediculus humanus) is a haematophagous ectoparasite that is intimately related to its host. It has been of great public health concern throughout human history. This louse has been classified into six divergent mitochondrial clades (A, D, B, F, C and E). As with all haematophagous lice, P. humanus directly depends on the presence of a bacterial symbiont, known as “Candidatus Riesia pediculicola”, to complement their unbalanced diet. In this study, we evaluated the codivergence of human lice around the world and their endosymbiotic bacteria. Using molecular approaches, we targeted lice mitochondrial genes from the six diverged clades and Candidatus Riesia pediculicola housekeeping genes. Methods The mitochondrial cytochrome b gene (cytb) of lice was selected for molecular analysis, with the aim to identify louse clade. In parallel, we developed four PCR primer pairs targeting three housekeeping genes of Candidatus Riesia pediculicola: ftsZ, groEL and two regions of the rpoB gene (rpoB-1 and rpoB-2). Results The endosymbiont phylogeny perfectly mirrored the host insect phylogeny using the ftsZ and rpoB-2 genes, in addition to showing a significant co-phylogenetic congruence, suggesting a strict vertical transmission and a host–symbiont co-speciation following the evolutionary course of the human louse. Conclusion Our results unequivocally indicate that louse endosymbionts have experienced a similar co-evolutionary history and that the human louse clade can be determined by their endosymbiotic bacteria. Graphical Abstract ![]()
Supplementary Information The online version contains supplementary material available at 10.1186/s13071-022-05203-z.
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Affiliation(s)
- Alissa Hammoud
- Institut Hospitalo-Universitaire (IHU) Méditerranée Infection, 13005, Marseille, France.,Institut de Recherche pour le Développement (IRD), Assistance Publique-Hôpitaux de Marseille (APHM), Microbes Evolution Phylogeny and Infections (MEPHI), Aix-Marseille University, 13005, Marseille, France
| | - Meriem Louni
- Institut Hospitalo-Universitaire (IHU) Méditerranée Infection, 13005, Marseille, France. .,Institut de Recherche pour le Développement (IRD), Assistance Publique-Hôpitaux de Marseille (APHM), Microbes Evolution Phylogeny and Infections (MEPHI), Aix-Marseille University, 13005, Marseille, France. .,Department of Biology, Faculty of Sciences, M'Hamed Bougara University, 35000, Boumerdès, Algeria.
| | - Dorothée Missé
- IRD, CNRS, MIVEGEC, Université Montpellier, 34394, Montpellier, France
| | - Sébastien Cortaredona
- Institut Hospitalo-Universitaire (IHU) Méditerranée Infection, 13005, Marseille, France.,Institut de Recherche pour le Développement (IRD), Assistance Publique-Hôpitaux de Marseille (APHM), Vectors Infections Tropicales and Mediterranean (VITROME), Aix-Marseille University, 13005, Marseille, France
| | - Florence Fenollar
- Institut Hospitalo-Universitaire (IHU) Méditerranée Infection, 13005, Marseille, France.,Institut de Recherche pour le Développement (IRD), Assistance Publique-Hôpitaux de Marseille (APHM), Vectors Infections Tropicales and Mediterranean (VITROME), Aix-Marseille University, 13005, Marseille, France
| | - Oleg Mediannikov
- Institut Hospitalo-Universitaire (IHU) Méditerranée Infection, 13005, Marseille, France. .,Institut de Recherche pour le Développement (IRD), Assistance Publique-Hôpitaux de Marseille (APHM), Microbes Evolution Phylogeny and Infections (MEPHI), Aix-Marseille University, 13005, Marseille, France.
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17
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Amanzougaghene N, Drali R, Shako JC, Davoust B, Fenollar F, Raoult D, Mediannikov O. High Genetic Diversity and Rickettsia felis in Pediculus humanus Lice Infesting Mbuti (pygmy people), -Democratic Republic of Congo. Front Cell Infect Microbiol 2022; 12:834388. [PMID: 35310843 PMCID: PMC8924665 DOI: 10.3389/fcimb.2022.834388] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Accepted: 02/08/2022] [Indexed: 11/14/2022] Open
Abstract
Pediculus humanus is an obligate bloodsucking parasite of humans that has two ecotypes, the head louse and the body louse, which share an intimate history of coevolution with their human host. In the present work, we obtained and analysed head and body lice collected from Mbuti pygmies living in the Orientale province of the Democratic Republic of the Congo. Cytochrome b DNA analysis was performed in order to type the six known lice clades (A, D, B, F, C and E). The results revealed the presence of two mitochondrial clades. Clade D was the most frequent (61.7% of 47), followed by clade A (38.3% of 47). Sixteen haplotypes were found in 47 samples, of which thirteen were novel haplotypes, indicating an unusually high genetic diversity that closely mirrors the diversity of their hosts. Moreover, we report for the first time the presence of the DNA of R. felis in three (6.4% of 47) head and body lice belonging to both clades A and D. Additional studies are needed to clarify whether the Pediculus lice can indeed transmit this emerging zoonotic bacterium to their human hosts.
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Affiliation(s)
- Nadia Amanzougaghene
- Aix Marseille Univ Institut de Recherche pour le Développement (IRD), Assistance Publique - Hôpitaux de Marseille (APHM), Microbes, Evolution (MEPHI), Phylogénie et Infection, Marseille, France
- Institut Hospitalo-Universitaire (IHU)-Méditerranée Infection, Marseille, France
| | - Rezak Drali
- Aix Marseille Univ Institut de Recherche pour le Développement (IRD), Assistance Publique - Hôpitaux de Marseille (APHM), Microbes, Evolution (MEPHI), Phylogénie et Infection, Marseille, France
- Institut Hospitalo-Universitaire (IHU)-Méditerranée Infection, Marseille, France
- Plateforme Génomique - Bioinformatique, Institut Pasteur d’Algérie, Rue du Petit Staouéli, Algiers, Algeria
| | | | - Bernard Davoust
- Aix Marseille Univ Institut de Recherche pour le Développement (IRD), Assistance Publique - Hôpitaux de Marseille (APHM), Microbes, Evolution (MEPHI), Phylogénie et Infection, Marseille, France
- Institut Hospitalo-Universitaire (IHU)-Méditerranée Infection, Marseille, France
| | - Florence Fenollar
- Aix Marseille Univ Institut de Recherche pour le Développement (IRD), Assistance Publique - Hôpitaux de Marseille (APHM), Microbes, Evolution (MEPHI), Phylogénie et Infection, Marseille, France
- Aix Marseille Univ, Institut de Recherche pour le Développement (IRD), Assistance Publique - Hôpitaux de Marseille (APHM), Vecteurs – Infections Tropicales et Méditeranéennes (VITROME), Marseille, France
| | - Didier Raoult
- Aix Marseille Univ Institut de Recherche pour le Développement (IRD), Assistance Publique - Hôpitaux de Marseille (APHM), Microbes, Evolution (MEPHI), Phylogénie et Infection, Marseille, France
- Institut Hospitalo-Universitaire (IHU)-Méditerranée Infection, Marseille, France
| | - Oleg Mediannikov
- Aix Marseille Univ Institut de Recherche pour le Développement (IRD), Assistance Publique - Hôpitaux de Marseille (APHM), Microbes, Evolution (MEPHI), Phylogénie et Infection, Marseille, France
- Institut Hospitalo-Universitaire (IHU)-Méditerranée Infection, Marseille, France
- *Correspondence: Oleg Mediannikov,
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18
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Phadungsaksawasdi K, Sunantaraporn S, Seatamanoch N, Kongdachalert S, Phumee A, Kraivichian K, Sawaswong V, Payungporn S, Brownell N, Siriyasatien P. Molecular analysis of mitochrondrial cytb of Pediculus humanus capitis in Thailand revealed potential historical connection with South Asia. PLoS One 2021; 16:e0257024. [PMID: 34492093 PMCID: PMC8423300 DOI: 10.1371/journal.pone.0257024] [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: 01/27/2021] [Accepted: 08/20/2021] [Indexed: 11/23/2022] Open
Abstract
Background Pediculus humanus capitis or head louse is an obligate ectoparasite and its infestation remains a major public health issue worldwide. Molecular analysis divides head lice into six clades and intra-clade genetic differences have been identified. Several hypotheses have been formulated to elucidate the discrepancies of the variety of head lice among different regions of the world. It is currently concluded that head lice distribution might be associated with human migration history. This study aims to investigate genetic data of human head lice in Thailand. We believe that the analysis could help establish the correlation between local and global head lice populations. Method We investigated mitochondrial cytochrome b (cytb) gene of the collected 214 head lice to evaluate genetic diversity from 15 provinces among 6 regions of Thailand. The head lice genes were added to the global pool for the phylogenetic tree, Bayesian tree, Skyline plot, and median joining network construction. The biodiversity, neutrality tests, and population genetic differentiation among the 6 Thailand geographic regions were analyzed by DNAsp version 6. Results The phylogenetic tree analysis of 214 collected head lice are of clade A and clade C accounting for roughly 65% and 35% respectively. The Bayesian tree revealed a correlation of clade diversification and ancient human dispersal timeline. In Thailand, clade A is widespread in the country. Clade C is confined to only the Central, Southern, and Northeastern regions. We identified 50 novel haplotypes. Statistical analysis showed congruent results between genetic differentiation and population migration especially with South Asia. Conclusions Pediculosis remains problematic among children in the rural areas in Thailand. Cytb gene analysis of human head lice illustrated clade distribution and intra-clade diversity of different areas. Our study reported novel haplotypes of head lice in Thailand. Moreover, the statistic calculation provided a better understanding of their relationship with human, as an obligate human parasite and might help provide a better insight into the history of human population migration. Determination of the correlation between phylogenetic data and pediculicide resistance gene as well as residing bacteria are of interest for future studies.
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Affiliation(s)
- Kobpat Phadungsaksawasdi
- Department of Parasitology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
- Vector Biology and Vector Borne Disease Research Unit, Department of Parasitology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Sakone Sunantaraporn
- Vector Biology and Vector Borne Disease Research Unit, Department of Parasitology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Nirin Seatamanoch
- Department of Parasitology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
- Vector Biology and Vector Borne Disease Research Unit, Department of Parasitology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Switt Kongdachalert
- Department of Parasitology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
- Vector Biology and Vector Borne Disease Research Unit, Department of Parasitology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Atchara Phumee
- Department of Medical Technology, School of Allied Health Sciences, Walailak University, Nakhon Si Thammarat, Thailand
| | - Kanyarat Kraivichian
- Department of Parasitology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
- Vector Biology and Vector Borne Disease Research Unit, Department of Parasitology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Vorthon Sawaswong
- Program in Bioinformatics and Computational Biology, Graduate School, Chulalongkorn University, Bangkok, Thailand
| | - Sunchai Payungporn
- Department of Biochemistry, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Narisa Brownell
- Department of Parasitology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
- Vector Biology and Vector Borne Disease Research Unit, Department of Parasitology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
- * E-mail:
| | - Padet Siriyasatien
- Department of Parasitology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
- Vector Biology and Vector Borne Disease Research Unit, Department of Parasitology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
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19
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Molecular Characterization and Genetic Diversity of Haplogroup E Human Lice in Guinea, West Africa. Microorganisms 2021; 9:microorganisms9020257. [PMID: 33513865 PMCID: PMC7911403 DOI: 10.3390/microorganisms9020257] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 01/13/2021] [Accepted: 01/21/2021] [Indexed: 01/30/2023] Open
Abstract
Pediculus humanus capitis, the head louse, is an obligate blood-sucking ectoparasite that occurs in six divergent mitochondrial clades (A, D, B, F, C and E). Several studies reported the presence of different pathogenic agents in head lice specimens collected worldwide. These findings suggest that head louse could be a dangerous vector and a serious public health problem. Herein, we aimed to study the mitochondrial genetic diversity, the PHUM540560 gene polymorphisms profile of head lice collected in Guinea, as well as to screen for their associated pathogens. In 2018, a total of 155 head lice were collected from 49 individuals at the Medicals Centers of rural (Maférinyah village) and urban (Kindia city) areas, in Guinea. Specimens were subjected to a genetic analysis and pathogens screening using molecular tools. Results showed that all head lice belonged to eight haplotypes in the E haplogroup, with six newly identified for the first time. The study of the PHUM540560 gene polymorphisms of our clade E-head lice revealed that 82.5% exhibited the same polymorphism profile as the previously reported clade A-body lice. Screening for targeted pathogens revealed the presence of Acinetobacter spp., while sequencing highlighted the presence of several species, including Acinetobacter baumannii, Acinetobacter nosocomialis, Acinetobacter variabilis, Acinetobacter towneri and for the first time Acinetobacter haemolyticus. Our study is the first to report the existence of the Guinean haplogroup E, the PHUM540560 gene polymorphism profile as well as the presence of Acinetobacter species in head lice collected from Guinea.
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20
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Santibáñez S, Caruz A, Márquez-Constán J, Portillo A, Oteo JA, Márquez FJ. Serologic study of Bartonella sp. infection among human population of Southern Spain. Enferm Infecc Microbiol Clin 2020; 40:S0213-005X(20)30399-2. [PMID: 33334612 DOI: 10.1016/j.eimc.2020.10.020] [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: 08/28/2020] [Revised: 10/06/2020] [Accepted: 10/09/2020] [Indexed: 11/03/2022]
Abstract
INTRODUCTION The purpose of this study was to determine the prevalence of IgG antibodies against Bartonella sp. in a randomly selected sample from the population of the patients of North Sanitary District of Jaén. METHODS We used a commercially available immunofluorescent test (Focus-Technology IFA Bartonella quintana and B. henselae test). RESULTS Six hundred five healthy individuals were divided by sex into three age groups. We detected that 13.55% and 11.07% subjects were IgG seropositive to B. henselae and B. quintana, respectively. CONCLUSIONS Our data show that the prevalence of both Bartonella species in Andalusia (Southern Spain) is relatively high. No statistical difference in the seropositivity was observed among these groups. In both cases, the IgG antibody titers ranged from 1/128 to 1/512.
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Affiliation(s)
- Sonia Santibáñez
- Departamento de Enfermedades Infecciosas, Hospital Universitario San Pedro-Centro de Investigación Biomédica de La Rioja (CIBIR), Logroño, Spain
| | - Antonio Caruz
- Departamento de Biología Experimental, Universidad de Jaén, Jaén, Spain
| | | | - Aránzazu Portillo
- Departamento de Enfermedades Infecciosas, Hospital Universitario San Pedro-Centro de Investigación Biomédica de La Rioja (CIBIR), Logroño, Spain
| | - Jose Antonio Oteo
- Departamento de Enfermedades Infecciosas, Hospital Universitario San Pedro-Centro de Investigación Biomédica de La Rioja (CIBIR), Logroño, Spain
| | - Francisco J Márquez
- Departamento de Biología Animal, Biología Vegetal y Ecología, Universidad de Jaén, Jaén, Spain.
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21
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Diarra AZ, Kone AK, Doumbo Niare S, Laroche M, Diatta G, Atteynine SA, Coulibaly M, Sangare AK, Kouriba B, Djimde A, Dabo A, Sagara I, Davoust B, Ranque S, Thera MA, Raoult D, Doumbo OK, Parola P. Molecular Detection of Microorganisms Associated with Small Mammals and Their Ectoparasites in Mali. Am J Trop Med Hyg 2020; 103:2542-2551. [PMID: 33146105 DOI: 10.4269/ajtmh.19-0727] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Small mammals are the natural reservoirs for many zoonotic pathogens. Using molecular tools, we assessed the prevalence of bacteria and protozoans in small mammals and their ectoparasites in Faladjè, Bougouni, and Bamoko, Mali. A total of 130 small mammals belonging to 10 different species were captured, of which 74 (56.9%) were infested by ectoparasites, including Laelaps echidnina, Xenopsylla cheopis, Amblyomma variegatum, Rhipicephalus sanguineus sensu lato, and Haemaphysalis spp. nymphs. DNA of Bartonella was found in 14/75 (18.7%), 6/48 (12.5%), and 3/7 (42.8%) small mammals from Faladjè, Bougouni, and Bamako, respectively. In Faladjè, Bartonella DNA was detected in 31/68 (45.6%) of L. echidnina and 14/22 (63.6%) of X. cheopis. In Bougouni, it was found in 2/26 (7.7%) of L. echidnina and 10/42 (23.8%) of X. cheopis. The sequences of Bartonella obtained from small mammals were close to those of Bartonella mastomydis, Bartonella elizabethae, and uncultured Bartonella spp. In Faladjè, Coxiella burnetii DNA was detected in 64.4% (29/45) of Haemaphysalis spp. ticks, 4.5% (2/44) of Mastomys erythroleucus, 12.5% (1/8) of Praomys daltoni, and 1.5% (1/68) of L. echidnina. We found DNA of Wolbachia in X. cheopis from Faladjè and DNA of Rickettsia africae and Ehrlichia ruminantium in Am. variegatum from Bougouni. The results of our study show that several small mammal species harbor and may serve as potential reservoirs of Bartonella spp., likely to play a major role in the maintenance, circulation, and potential transmission of bacteria in Mali. The pathogenicity of these bacteria for humans or animals remains to be demonstrated.
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Affiliation(s)
- Adama Zan Diarra
- Aix Marseille Univ., IRD, AP-HM, SSA, VITROME, Marseille, France.,Malaria Research and Training Center (MRTC), Department of Epidemiology of Parasitic Diseases (DEAP), Faculty of Medicine and Dentistry, UMI 3189 "Environnement, Santé, Sociétés", University of Science, Techniques and Technologies of Bamako (USTTB), Bamako, Mali.,IHU-Méditerranée Infection, Marseille, France
| | - Abdoulaye Kassoum Kone
- Malaria Research and Training Center (MRTC), Department of Epidemiology of Parasitic Diseases (DEAP), Faculty of Medicine and Dentistry, UMI 3189 "Environnement, Santé, Sociétés", University of Science, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Safiatou Doumbo Niare
- Malaria Research and Training Center (MRTC), Department of Epidemiology of Parasitic Diseases (DEAP), Faculty of Medicine and Dentistry, UMI 3189 "Environnement, Santé, Sociétés", University of Science, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Maureen Laroche
- IHU-Méditerranée Infection, Marseille, France.,Aix Marseille Univ., IRD, AP-HM, SSA, VITROME, Marseille, France
| | - Georges Diatta
- VITROME Dakar, Campus International IRD-UCAD Hann, Dakar, Senegal
| | | | - Maïmouna Coulibaly
- Malaria Research and Training Center (MRTC), Department of Epidemiology of Parasitic Diseases (DEAP), Faculty of Medicine and Dentistry, UMI 3189 "Environnement, Santé, Sociétés", University of Science, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Abdoul Karim Sangare
- Malaria Research and Training Center (MRTC), Department of Epidemiology of Parasitic Diseases (DEAP), Faculty of Medicine and Dentistry, UMI 3189 "Environnement, Santé, Sociétés", University of Science, Techniques and Technologies of Bamako (USTTB), Bamako, Mali.,Centre d'Infectiologie Charles Mérieux, Bamako, Mali
| | - Bouréma Kouriba
- Malaria Research and Training Center (MRTC), Department of Epidemiology of Parasitic Diseases (DEAP), Faculty of Medicine and Dentistry, UMI 3189 "Environnement, Santé, Sociétés", University of Science, Techniques and Technologies of Bamako (USTTB), Bamako, Mali.,Centre d'Infectiologie Charles Mérieux, Bamako, Mali
| | - Abdoulaye Djimde
- Malaria Research and Training Center (MRTC), Department of Epidemiology of Parasitic Diseases (DEAP), Faculty of Medicine and Dentistry, UMI 3189 "Environnement, Santé, Sociétés", University of Science, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Abdoulaye Dabo
- Malaria Research and Training Center (MRTC), Department of Epidemiology of Parasitic Diseases (DEAP), Faculty of Medicine and Dentistry, UMI 3189 "Environnement, Santé, Sociétés", University of Science, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Issaka Sagara
- Malaria Research and Training Center (MRTC), Department of Epidemiology of Parasitic Diseases (DEAP), Faculty of Medicine and Dentistry, UMI 3189 "Environnement, Santé, Sociétés", University of Science, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Bernard Davoust
- IHU-Méditerranée Infection, Marseille, France.,Aix Marseille Univ., IRD, AP-HM, MEPHI, Marseille, France
| | - Stéphane Ranque
- IHU-Méditerranée Infection, Marseille, France.,Aix Marseille Univ., IRD, AP-HM, SSA, VITROME, Marseille, France
| | - Mahamadou A Thera
- Malaria Research and Training Center (MRTC), Department of Epidemiology of Parasitic Diseases (DEAP), Faculty of Medicine and Dentistry, UMI 3189 "Environnement, Santé, Sociétés", University of Science, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Didier Raoult
- IHU-Méditerranée Infection, Marseille, France.,Aix Marseille Univ., IRD, AP-HM, MEPHI, Marseille, France
| | - Ogobara K Doumbo
- Malaria Research and Training Center (MRTC), Department of Epidemiology of Parasitic Diseases (DEAP), Faculty of Medicine and Dentistry, UMI 3189 "Environnement, Santé, Sociétés", University of Science, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Philippe Parola
- IHU-Méditerranée Infection, Marseille, France.,Aix Marseille Univ., IRD, AP-HM, SSA, VITROME, Marseille, France
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22
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Boumbanda-Koyo CS, Mediannikov O, Amanzougaghene N, Oyegue-Liabagui SL, Imboumi-Limoukou RK, Raoult D, Lekana-Douki JB, Fenollar F. Molecular identification of head lice collected in Franceville (Gabon) and their associated bacteria. Parasit Vectors 2020; 13:410. [PMID: 32782016 PMCID: PMC7422577 DOI: 10.1186/s13071-020-04293-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Accepted: 08/06/2020] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Pediculus humanus, which includes two ecotypes (body and head lice), is an obligate bloodsucking parasite that co-evolved with their human hosts over thousands of years, thus providing a valuable source of information to reconstruct the human migration. Pediculosis due to head lice occurred each year throughout the world and several pathogenic bacteria, which are usually associated with body lice, are increasingly detected in them. In Gabon, where this pediculosis is still widespread, there is a lack of data on genetic diversity of head lice and their associated bacteria. METHODS This study aimed to investigate the phylogeny of head lice collected in Gabon and their associated bacteria, using molecular tools. Between 26 March and 11 April 2018, 691 head lice were collected from 86 women in Franceville. We studied the genetic diversity of these lice based on the cytochrome b gene, then we screened them for DNA of Bartonella quintana, Borrelia spp., Acinetobacter spp., Yersinia pestis, Rickettsia spp., R. prowazekii, Anaplasma spp. and C. burnetii, using real time or standard PCR and sequencing. RESULTS Overall 74.6% of studied lice belonged to Clade A, 25.3% to Clade C and 0.1% to Clade E. The phylogenetic analysis of 344 head lice yielded 45 variable positions defining 13 different haplotypes from which 8 were novel. Bacterial screening revealed the presence of Borrelia spp. DNA in 3 (0.4%) of 691 head lice belonging to Clade A and infesting one individual. This Borrelia is close to B. theileri (GenBank: MN621894). Acinetobacter spp. DNA has been detected in 39 (25%) of the 156 screened lice; of these 13 (8.3%) corresponded to A. baumannii. Acinetobacter nosocomialis (n = 2) and A. pittii (n = 1) were also recorded. CONCLUSIONS To of our knowledge, this study is the first to investigate the genetic diversity of head lice from Gabon. It appears that Clade C is the second most important clade in Gabon, after Clade A which is known to have a global distribution. The detection of Borrelia spp. DNA in these lice highlight the potential circulation of these bacteria in Gabon.
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Affiliation(s)
- Celia Scherelle Boumbanda-Koyo
- Aix Marseille Univ, IRD, AP-HM, SSA, VITROME, Marseille, France.,IHU-Méditerranée Infection, Marseille, France.,Unité d'Evolution, Epidémiologie et Résistances Parasitaires (UNEEREP), Centre International de Recherches Médicales de Franceville (CIRMF), B.P. 769, Franceville, Gabon.,Ecole Doctorale Régionale en Infectiologie Tropicale d'Afrique Centrale, B.P. 876, Franceville, Gabon
| | - Oleg Mediannikov
- IHU-Méditerranée Infection, Marseille, France. .,Aix Marseille Univ, IRD, AP-HM, MEPHI, Marseille, France.
| | - Nadia Amanzougaghene
- IHU-Méditerranée Infection, Marseille, France.,Aix Marseille Univ, IRD, AP-HM, MEPHI, Marseille, France
| | | | - Roméo Karl Imboumi-Limoukou
- Unité d'Evolution, Epidémiologie et Résistances Parasitaires (UNEEREP), Centre International de Recherches Médicales de Franceville (CIRMF), B.P. 769, Franceville, Gabon
| | - Didier Raoult
- IHU-Méditerranée Infection, Marseille, France.,Aix Marseille Univ, IRD, AP-HM, MEPHI, Marseille, France
| | - Jean Bernard Lekana-Douki
- Unité d'Evolution, Epidémiologie et Résistances Parasitaires (UNEEREP), Centre International de Recherches Médicales de Franceville (CIRMF), B.P. 769, Franceville, Gabon.,Ecole Doctorale Régionale en Infectiologie Tropicale d'Afrique Centrale, B.P. 876, Franceville, Gabon.,Département de Parasitologie-Mycologie et Médecine Tropicale, Faculté de Médecine, Université des Sciences de la Santé (USS), B.P. 4009, Libreville, Gabon
| | - Florence Fenollar
- Aix Marseille Univ, IRD, AP-HM, SSA, VITROME, Marseille, France.,IHU-Méditerranée Infection, Marseille, France
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23
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Knowledge, Attitude, and Practice of Pediculus Capitis Prevention and Control and Their Predictors among Schoolchildren in Woreta Town, Northwest Ethiopia, 2018: A School-Based Cross-Sectional Study. Int J Pediatr 2020; 2020:3619494. [PMID: 32695186 PMCID: PMC7350088 DOI: 10.1155/2020/3619494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 06/02/2020] [Accepted: 06/08/2020] [Indexed: 11/17/2022] Open
Abstract
Background Pediculus capitis is a human head lice infestation, a major public health issue that is most prevalent in resource-limited countries globally. The current study aimed to assess the knowledge, attitude, and practice of pediculus capitis prevention and control and their predictors among schoolchildren in North West Ethiopia. Methods About 402 randomly selected schoolchildren from three schools in Woreta town participated in the study from April to June 2018. The outcomes of this study were knowledge, attitude, and self-reported practice of schoolchildren about pediculus capitis prevention and control. We used EPI Info 7.1 and SPSS 21 software for data entry and analysis, respectively. Binary logistic regression was employed to test the association of covariates with the outcome/response variables. Variables with a p value <0.2 during the bivariable binary logistic regression analysis were included in the multivariable binary logistic regression analysis. Variables with p value <0.05 were declared as significantly associated with outcomes. Results The mean age of the study participants was 10.19 (±1.62) years. About 58.8%, 45.8%, and 78.6% of the schoolchildren had better self-reported pediculus capitis prevention knowledge, attitude, and practice, respectively. Age of children [9 to 11 years (AOR = 2.24, 95% C.I (1.10, 4.55)) and>12 years (AOR = 3.84, 95% C.I (1.56, 9.46))], better practice (AOR = 2.93, 95% C.I (1.39, 6.18)), and those who were not infested (AOR = 2.25, 95% C.I (1.14, 4.44)) were predictors of knowledge regarding pediculus capitis prevention. Better practice (AOR = 4.33, 95% C.I (1.69, 11.09)) and absence of infestation (AOR = 2.97, 95% C.I (1.64, 5.36)) were predictors of attitude of schoolchildren about pediculus capitis prevention. Number of students in a class [51 to 56 students per classroom, AOR = 4.61, 95% C.I (1.83, 11.67); 57 to 58 students per classroom, AOR = 8.18, 95% C.I (2.73, 24.46)], less than five family size (AOR = 2.37, 95% C.I (1.24, 4.54)), better knowledge (AOR = 2.93, 95% C.I (1.32, 6.50)), desirable attitude (AOR = 4.24, 95% C.I (1.60, 11.23)), and absence of infestation (AOR = 3.52, 95% C.I (1.22, 10.15)) were predictors of self-reported pediculus capitis prevention practice. Conclusion The knowledge, attitude, and practice of schoolchildren regarding pediculus capitis prevention and control were not satisfactory. To bring change, intensive efforts on factors associated with the knowledge, attitude, and practice should be encouraged.
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24
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Djohan V, Angora KE, Miezan S, Bédia AK, Konaté A, Vanga-Bosson AH, Kassi FK, Kiki-Barro P, Yavo W, Menan EI. Pediculosis capitis in Abidjan, Côte d'Ivoire: Epidemiological profile and associated risk factors. Parasite Epidemiol Control 2020; 11:e00159. [PMID: 32715112 PMCID: PMC7371914 DOI: 10.1016/j.parepi.2020.e00159] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 06/02/2020] [Accepted: 06/13/2020] [Indexed: 12/28/2022] Open
Abstract
Pediculosis capitis (PC) is a parasitic infestation, common in children's communities caused by Pediculus humanus capitis. Various factors including infestation-related stigma, treatment cost and health risks make this infestation deserves special attention. This study aims to determine epidemiological profile of pediculosis capitis twenty years after the last study in Abidjan, Côte d’Ivoire. An epidemiological cross-sectional survey was carried out from April to June 2018 across 40 public primary schools in the ten districts of Abidjan. Data from schoolchildren and parents and/or guardians were collected using a pretested questionnaire after agreement and signature of the informed consent form. Head lice were identified visually with a magnifying glass, and then collected using fine combs and hairbrushes. The positive diagnosis was made by the detection of living lice in the hair. Of the 4, 805 included participants, 28 (0.58%) were hosting living lice in hair. Analysis of associated factors showed that gender related-status was associated with PC. In this case, girls were more affected than boys (p=0.018). Plateau, Treichville and Port Bouët municipalities were the most affected (p=0.018). The length hair was associated with the occurrence of PC (p<0,001). Schoolchildren from families with low monthly income was most infected by PC (p=0.023). Some parameters such as promiscuity and collective use of washing facilities and bedding, were not found to be associated to head lice infestation. This study shows a drastic decrease of PC prevalence in Abidjan corresponding to 97%. This could be due to the improvement in the quality of life and education of the population of Abidjan. The establishment of hygiene committees and the teaching of basic hygiene practices from the first school years have contributed to these achievements. Maintaining these measures will contribute to the sustainable elimination of CP among children in Abidjan.
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Affiliation(s)
- V Djohan
- Département de parasitologie-mycologie, UFR Sciences Pharmaceutiques et Biologiques, Université Félix Houphouët-Boigny, 01 BPV 34 Abidjan, Côte d'Ivoire.,Institut Pierre Richet/Institut National de Santé Publique, Bouaké, 01 BP 1500 Bouaké, Côte d'Ivoire
| | - K E Angora
- Département de parasitologie-mycologie, UFR Sciences Pharmaceutiques et Biologiques, Université Félix Houphouët-Boigny, 01 BPV 34 Abidjan, Côte d'Ivoire
| | - S Miezan
- Département de parasitologie-mycologie, UFR Sciences Pharmaceutiques et Biologiques, Université Félix Houphouët-Boigny, 01 BPV 34 Abidjan, Côte d'Ivoire
| | - A K Bédia
- Département de parasitologie-mycologie, UFR Sciences Pharmaceutiques et Biologiques, Université Félix Houphouët-Boigny, 01 BPV 34 Abidjan, Côte d'Ivoire
| | - A Konaté
- Département de parasitologie-mycologie, UFR Sciences Pharmaceutiques et Biologiques, Université Félix Houphouët-Boigny, 01 BPV 34 Abidjan, Côte d'Ivoire
| | - A H Vanga-Bosson
- Département de parasitologie-mycologie, UFR Sciences Pharmaceutiques et Biologiques, Université Félix Houphouët-Boigny, 01 BPV 34 Abidjan, Côte d'Ivoire
| | - F K Kassi
- Département de parasitologie-mycologie, UFR Sciences Pharmaceutiques et Biologiques, Université Félix Houphouët-Boigny, 01 BPV 34 Abidjan, Côte d'Ivoire
| | - Pcm Kiki-Barro
- Département de parasitologie-mycologie, UFR Sciences Pharmaceutiques et Biologiques, Université Félix Houphouët-Boigny, 01 BPV 34 Abidjan, Côte d'Ivoire
| | - W Yavo
- Département de parasitologie-mycologie, UFR Sciences Pharmaceutiques et Biologiques, Université Félix Houphouët-Boigny, 01 BPV 34 Abidjan, Côte d'Ivoire
| | - E I Menan
- Département de parasitologie-mycologie, UFR Sciences Pharmaceutiques et Biologiques, Université Félix Houphouët-Boigny, 01 BPV 34 Abidjan, Côte d'Ivoire
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Fox K, Larkin K, Sanchez A. Global Trends in Genetic Markers of Pediculus humanus capitis Resistance Mechanisms. CURRENT TROPICAL MEDICINE REPORTS 2020. [DOI: 10.1007/s40475-020-00204-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Mokhtar AS, Ling Lau Y, Wilson JJ, Abdul-Aziz NM. Genetic Diversity of Pediculus humanus capitis (Phthiraptera: Pediculidae) in Peninsular Malaysia and Molecular Detection of Its Potential Associated Pathogens. JOURNAL OF MEDICAL ENTOMOLOGY 2020; 57:915-926. [PMID: 31828310 DOI: 10.1093/jme/tjz234] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Indexed: 06/10/2023]
Abstract
Pediculosis capitis caused by Pediculus humanus capitis (De Geer) is endemic all over the world, and children are mostly affected, particularly those living in overcrowded institutions. Several studies have shown that P. h. capitis carried human pathogenic bacteria, suggesting the potential role of head lice in the transmission of pathogens to humans. In this study, we determined the genetic diversity of head lice collected from welfare homes sheltering underprivileged children by using DNA barcoding and demonstrated the presence of Acinetobacter spp., Serratia marcescens, and Staphylococcus aureus in head lice, which have never been investigated before in Malaysia. Cox1 DNA barcoding identified the head lice, P. h. capitis collected from welfare homes across two geographical areas of Peninsular Malaysia as belonging to clades A, B, and D. Acinetobacter bacteria: Acinetobacter guillouiae, Acinetobacter junii, Acinetobacter baumannii, and Acinetobacter nosocomialis were detected in head lice belonging to clades A and also D. In addition, DNA from S. marcescens and S. aureus were also detected in both clades A and D. To our knowledge, this is the first report on the genetic diversity of head lice in Malaysia through DNA barcoding, as well as the first to provide molecular evidence on the type of bacteria occurring in head lice in Malaysia. It is anticipated that the DNA barcoding technique used in this study will be able to provide rapid and accurate identification of arthropods, in particular, medically important ectoparasites.
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Affiliation(s)
- Aida Syafinaz Mokhtar
- Malaysian Life Science Accelerator, UM Centre of Innovation and Commercialization, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Yee Ling Lau
- Department of Parasitology, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - John-James Wilson
- International College Beijing, China Agricultural University, Beijing, P.R. China
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Amanzougaghene N, Mediannikov O, Ly TDA, Gautret P, Davoust B, Fenollar F, Izri A. Molecular investigation and genetic diversity of Pediculus and Pthirus lice in France. Parasit Vectors 2020; 13:177. [PMID: 32264930 PMCID: PMC7140345 DOI: 10.1186/s13071-020-04036-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2019] [Accepted: 03/25/2020] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Humans are parasitized by three types of lice: body, head and pubic lice. As their common names imply, each type colonizes a specific region of the body. The body louse is the only recognized disease vector. However, an increasing awareness of head lice as a vector has emerged recently whereas the status of pubic lice as a vector is not known since it has received little attention. METHODS Here, we assessed the occurrence of bacterial pathogens in 107 body lice, 33 head lice and 63 pubic lice from Marseille and Bobigny (France) using molecular methods. RESULTS Results show that all body lice samples belonged to the cytb Clade A whereas head lice samples belonged to Clades A and B. DNA of Bartonella quintana was detected in 7.5% of body lice samples and, for the first time to our knowledge, in 3.1% of pubic lice samples. Coxiella burnetii, which is not usually associated with transmission by louse, was detected in 3.7% of body lice samples and 3% of head lice samples. To the best of our knowledge, this is the first report of C. burnetii in Pediculus lice infesting humans in France. Acinetobacter DNA was detected in 21.5% of body lice samples, 6% of head lice samples and 9.5% of pubic lice samples. Five species were identified with A. baumannii being the most prevalent. CONCLUSIONS Our study is the first to report the presence of B. quintana in pubic lice. This is also the first report of the presence of DNA of C. burnetii in body lice and head lice in France. Further efforts on the vectorial role of human lice are needed, most importantly the role of pubic lice as a disease vector should be further investigated.
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Affiliation(s)
- Nadia Amanzougaghene
- Aix Marseille Univ, IRD, AP-HM, SSA, VITROME, Marseille, France. .,IHU-Méditerranée Infection, Marseille, France.
| | - Oleg Mediannikov
- Aix Marseille Univ, IRD, AP-HM, SSA, VITROME, Marseille, France. .,IHU-Méditerranée Infection, Marseille, France.
| | - Tran Duc Anh Ly
- IHU-Méditerranée Infection, Marseille, France.,Aix Marseille Univ, IRD, AP-HM, MEPHI, Marseille, France
| | - Philippe Gautret
- IHU-Méditerranée Infection, Marseille, France.,Aix Marseille Univ, IRD, AP-HM, MEPHI, Marseille, France
| | - Bernard Davoust
- Aix Marseille Univ, IRD, AP-HM, SSA, VITROME, Marseille, France.,IHU-Méditerranée Infection, Marseille, France
| | - Florence Fenollar
- IHU-Méditerranée Infection, Marseille, France.,Aix Marseille Univ, IRD, AP-HM, MEPHI, Marseille, France
| | - Arezki Izri
- Department of Parasitology-Mycology, AP-HP, Hôpital Avicenne, Bobigny, France.,UMR "Émergence des Pathologies Virales" (EPV, Aix-Marseille University-IRD, 190-Inserm 1207 EHESP-IHU Méditerranée Infection), Marseille, France
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28
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López-Valencia D, Medina-Ortega ÁP, Hoyos-Samboní DF, Salguero C, Vásquez-Arteaga LR. Pediculosis capitis y transmisión potencial de enfermedades infecciosas reemergentes en Colombia. Revisión de la literatura. REVISTA DE LA FACULTAD DE MEDICINA 2020. [DOI: 10.15446/revfacmed.v68n2.76604] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Introducción. La infestación por piojos de la cabeza en humanos (Pediculus humanus capitis) se conoce como pediculosis capitis. Estos parásitos pueden ser vectores de enfermedades infecciosas con potencial reemergente.Objetivos. Revisar la literatura actual sobre las enfermedades infecciosas transmitidas por piojos de la cabeza y realizar una breve descripción de sus manifestaciones clínicas.Materiales y métodos. Se realizó una revisión de la literatura en PubMed, ScienceDirect, SciELO y Redalyc mediante la siguiente estrategia de búsqueda: años de publicación: 1938 a 2019; idioma: inglés y español; términos de búsqueda: “Pediculus”, “lice infestations”, “bacteria”, “emerging communicable diseases”, “Rickettsia”, “Bartonella”, “Borrelia”, “Acinetobacter”, “Yersinia“, and “Colombia”, y sus equivalentes en español.Resultados. De los 110 artículos incluidos, la mayoría correspondió a investigaciones originales (48.2%). A nivel mundial, numerosos estudios han reportado la transmisión de Rickettsia prowazekii, Bartonella quintana, Borrelia recurrentis, Staphylococcus aureus, Acinetobacter baumannii y Yersinia pestis, entre otras bacterias, por los piojos de la cabeza y del cuerpo en humanos.Conclusiones. Aunque las enfermedades infecciosas transmitidas por piojos de la cabeza son raras, guardan potencial reemergente en poblaciones afectadas por migraciones humanas, crisis sociopolíticas, indigencia e inmunosupresión. En Colombia no se han realizado investigaciones sobre la transmisión de estas enfermedades por Pediculus spp., por lo que se sugiere que en estudios futuros se determine la prevalencia y los aspectos epidemiológicos de las enfermedades transmitidas por piojos de la cabeza en población colombiana.
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Ectoparasites. J Am Acad Dermatol 2020; 82:551-569. [DOI: 10.1016/j.jaad.2019.05.110] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Revised: 05/16/2019] [Accepted: 05/31/2019] [Indexed: 12/18/2022]
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Amanzougaghene N, Fenollar F, Raoult D, Mediannikov O. Where Are We With Human Lice? A Review of the Current State of Knowledge. Front Cell Infect Microbiol 2020; 9:474. [PMID: 32039050 PMCID: PMC6990135 DOI: 10.3389/fcimb.2019.00474] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Accepted: 12/24/2019] [Indexed: 12/20/2022] Open
Abstract
Pediculus humanus is an obligate bloodsucking ectoparasite of human that includes two ecotypes, head louse and body louse, which differ slightly in morphology and biology, but have distinct ecologies. Phylogenetically, they are classified on six mitochondrial clades (A, B, C, D, E, and F), head louse encompasses the full genetic diversity of clades, while body louse belongs to clades A and D. Recent studies suggested that not only body louse, but also head louse can transmit disease, which warrants greater attention as a serious public health problem. The recent sequencing of body louse genome confirmed that P. humanus has the smallest genome of any hemimetabolous insect reported to date, and also revealed numerous interesting characteristics in the nuclear and mitochondrial genomes. The transcriptome analyses showed that body and head lice were almost genetically identical. Indeed, the phenotypic flexibility associated with the emergence of body lice, is probably a result of regulatory changes, perhaps epigenetic in origin, triggered by environmental signals. Current lice control strategies have proven unsuccessful. For instance, ivermectin represents a relatively new and very promising pediculicide. However, ivermectin resistance in the field has begun to be reported. Therefore, novel opportunities for pest control strategies are needed. Our objective here is to review the current state of knowledge on the biology, epidemiology, phylogeny, disease-vector and control of this fascinating and very intimate human parasite.
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Affiliation(s)
- Nadia Amanzougaghene
- Aix Marseille Univ, IRD, AP-HM, SSA, VITROME, Marseille, France.,IHU-Méditerranée Infection, Marseille, France
| | - Florence Fenollar
- IHU-Méditerranée Infection, Marseille, France.,Aix Marseille Univ, IRD, AP-HM, MEPHI, Marseille, France
| | - Didier Raoult
- Aix Marseille Univ, IRD, AP-HM, SSA, VITROME, Marseille, France.,IHU-Méditerranée Infection, Marseille, France
| | - Oleg Mediannikov
- Aix Marseille Univ, IRD, AP-HM, SSA, VITROME, Marseille, France.,IHU-Méditerranée Infection, Marseille, France
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Agany DDM, Potts R, Gonzalez Hernandez JL, Gnimpieba EZ, Pietri JE. Microbiome Differences between Human Head and Body Lice Ecotypes Revealed by 16S rRNA Gene Amplicon Sequencing. J Parasitol 2020. [DOI: 10.1645/19-132] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Affiliation(s)
- Diing D. M. Agany
- University of South Dakota, Biomedical Engineering Program, Sioux Falls, South Dakota 57107
| | - Rashaun Potts
- University of South Dakota, Sanford School of Medicine, Division of Basic Biomedical Sciences, Vermillion, South Dakota 57069
| | | | - Etienne Z. Gnimpieba
- University of South Dakota, Biomedical Engineering Program, Sioux Falls, South Dakota 57107
| | - Jose E. Pietri
- University of South Dakota, Sanford School of Medicine, Division of Basic Biomedical Sciences, Vermillion, South Dakota 57069
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Pietri JE, Yax JA, Agany DD, Gnimpieba EZ, Sheele JM. Body lice and bed bug co-infestation in an emergency department patient, Ohio, USA. IDCases 2020; 19:e00696. [PMID: 31988849 PMCID: PMC6970161 DOI: 10.1016/j.idcr.2020.e00696] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Revised: 01/07/2020] [Accepted: 01/07/2020] [Indexed: 12/17/2022] Open
Abstract
Body lice and bed bugs are hematophagous insects that parasitize humans. Body lice are established vectors of several bacterial pathogens (e.g. Bartonella quintana, Borrelia recurrentis). Bed bugs are biologically competent vectors of some of the same agents, but their vectorial capacity for these in nature is unclear. In particular, a lack of exposure to louse-borne pathogens in bed bugs in the field could be a factor that limits their contribution to transmission. Here, we describe a case of a patient seen in an urban emergency department who was suffering from infestation with both body lice and bed bugs. Insects were collected from the patient and tested for the presence of louse-borne bacterial pathogens using 16S rRNA gene amplicon sequencing. Although no Bartonella, Borrelia, or Rickettsia were detected, this case provides evidence of ecological overlap between body lice and bed bugs and highlights several potential risk factors for co-infestation. The ecological relationships between bed bugs, body lice, and louse-borne bacteria should be further investigated in the field to determine the frequency of co-infestations and identify possible instances of pathogen infection in bed bugs.
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Affiliation(s)
- Jose E. Pietri
- University of South Dakota, Sanford School of Medicine, Division of Basic Biomedical Sciences, Vermillion, SD, United States
| | - Justin A. Yax
- University Hospitals Cleveland Medical Center, Division of Population Health, Department of Emergency Medicine, Cleveland, OH, United States
| | - Diing D.M. Agany
- University of South Dakota, Biomedical Engineering Program, Sioux Falls, SD, United States
| | - Etienne Z. Gnimpieba
- University of South Dakota, Biomedical Engineering Program, Sioux Falls, SD, United States
| | - Johnathan M. Sheele
- Mayo Clinic, Department of Emergency Medicine, Jacksonville, FL, United States
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Abstract
La pediculosis capitis es la ectoparasitosis más frecuente a nivel mundial. La infestación es causada por Pediculus humanus capitis (piojo de la cabeza) y afecta el cabello, el cuero cabelludo y la piel. Rara vez se manifiesta con otro tipo de sintomatología y, por lo general, su curso es benigno si se trata adecuadamente. Se presenta el caso de una menor con pediculosis capitis de 18 meses de evolución, asociada con forúnculos, lesiones cutáneas, múltiples adenopatías y anemia, que no mejoró tras la aplicación del champú. Inicialmente, llamó la atención la presencia de forúnculos, alopecia y adenopatías. La persistencia de la pediculosis capitis y el rascado intenso alteraron la integridad de la epidermis y facilitaron las infecciones secundarias por bacterias patógenas y oportunistas que produjeron impétigo, forunculosis, excoriaciones, costras hemáticas, anemia, alopecia y linfadenopatías. La pediculosis capitis afectó notoriamente a la paciente al causarle problemas psicológicos y de salud, agudizados por su condición económica y social. La paciente presentó manifestaciones clínicas poco frecuentes (forunculosis, anemia, fiebre, alopecia y adenopatías), lo cual se vio facilitado por la persistencia de los factores de riesgo y el hecho de que no se le inspeccionaba la cabeza ni se removían los insectos. La educación sobre los factores de riesgo y el control sanitario es indispensable para controlar la infestación.
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Pérez-Tanoira R, Ramos-Rincón JM, Martín-Martín I, Prieto-Pérez L, Tefasmariam A, Tiziano G, Anda P, González-Martín-Niño RM, Rodríguez-Vargas M, Górgolas M, Jado I. Molecular Survey of Rickettsia spp., Anaplasma spp., Ehrlichia spp., Bartonella spp., and Borrelia spp. in Fleas and Lice in Ethiopia. Vector Borne Zoonotic Dis 2019; 20:10-14. [PMID: 31408412 DOI: 10.1089/vbz.2019.2500] [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: 12/29/2022] Open
Abstract
Bacterial arthropod-borne pathogens can often cause fever in Africa, but rural laboratories in these settings are usually too basic to provide a precise picture of their epidemiological impact. Our aim was to determine the prevalence of bacterial pathogens in fleas and lice in a rural area of southeast Ethiopia. Between July and November 2013, we extracted DNA from 91 fleas (Ctenocephalides felis [n = 50; 54.9%], Pulex irritans [n = 37; 40.1%], and C. canis [n = 4; 4.4%] and 30 lice (Pediculus humanus capitis [n = 16; 53.3%] and Pediculus humanus humanus [n = 14; 46.7%]), using two quantitative PCR (qPCR) analyses to look for bacteria from the genera: Anaplasma, Bartonella, Borrelia, Coxiella, Ehrlichia, Francisella, and Rickettsia. Of the 91 fleas analyzed, pathogens were present in 79 (86.8%), including Rickettsia felis (n = 41; 45%), Anaplasma platys (n = 40; 44.0%), Rickettsia monacensis (n = 2; 2.2%), Ehrlichia muris-like agent (n = 1; 1.1%), and Bartonella clarridgeiae (n = 1; 1.1%). P. irritans was the flea species most frequently infected with A. platys (67.7%), followed by C. felis (30.7%) (p < 0.001). Of the 30 lice identified, pathogens were present in 7 (23.3%): Bartonella quintana (n = 4; 16.7%), E. muris (n = 2, 6.7%), and Borrelia recurrentis (n = 1, 3.3%). Thus, in this rural area of Africa, fleas and lice can transmit parasitic pathogens to humans, causing febrile symptoms.
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Affiliation(s)
- Ramón Pérez-Tanoira
- Department of Medicine and Laboratory, Gambo Rural General Hospital, Kore, Ethiopia.,Department of Infectious Diseases, IIS-Fundación Jiménez Díaz and Universidad Autónoma de Madrid, Madrid, Spain
| | - José M Ramos-Rincón
- Department of Medicine and Laboratory, Gambo Rural General Hospital, Kore, Ethiopia.,Department of Internal Medicine, General University Hospital of Alicante, Institute for Health and Biomedical Research of Alicante (ISABIAL-Foundation FISABIO) and Miguel Hernández University of Elche, Alicante, Spain
| | - Inés Martín-Martín
- National Centre of Microbiology, Health Institute Carlos III, Madrid, Spain
| | - Laura Prieto-Pérez
- Department of Medicine and Laboratory, Gambo Rural General Hospital, Kore, Ethiopia.,Department of Infectious Diseases, IIS-Fundación Jiménez Díaz and Universidad Autónoma de Madrid, 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
| | - Pedro Anda
- National Centre of Microbiology, Health Institute Carlos III, Madrid, Spain
| | | | | | - Miguel Górgolas
- Department of Medicine and Laboratory, Gambo Rural General Hospital, Kore, Ethiopia.,Department of Infectious Diseases, IIS-Fundación Jiménez Díaz and Universidad Autónoma de Madrid, Madrid, Spain
| | - Isabel Jado
- National Centre of Microbiology, Health Institute Carlos III, Madrid, Spain
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Eremeeva ME, Warang SS, Anderson ML, Capps D, Zohdy S, Durden LA. Molecular Survey for Pathogens and Markers of Permethrin Resistance in Human Head Lice (Phthiraptera: Pediculidae) from Madagascar. J Parasitol 2019. [DOI: 10.1645/18-146] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Affiliation(s)
- Marina E. Eremeeva
- Jiann-Ping Hsu College of Public Health, Georgia Southern University, 501 Forest Drive, P.O. Box 8015, Statesboro, Georgia 30458
| | - Shamta S. Warang
- Jiann-Ping Hsu College of Public Health, Georgia Southern University, 501 Forest Drive, P.O. Box 8015, Statesboro, Georgia 30458
| | - Matthew L. Anderson
- Jiann-Ping Hsu College of Public Health, Georgia Southern University, 501 Forest Drive, P.O. Box 8015, Statesboro, Georgia 30458
| | - Danielle Capps
- Jiann-Ping Hsu College of Public Health, Georgia Southern University, 501 Forest Drive, P.O. Box 8015, Statesboro, Georgia 30458
| | - Sarah Zohdy
- School of Forestry & Wildlife Sciences, Auburn University, Auburn, Alabama 36849
| | - Lance A. Durden
- College of Science and Mathematics, Georgia Southern University, P.O. Box 8042-1, Statesboro, Georgia 30458
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Boumbanda Koyo CS, Amanzougaghene N, Davoust B, Tshilolo L, Lekana-Douki JB, Raoult D, Mediannikov O, Fenollar F. Genetic diversity of human head lice and molecular detection of associated bacterial pathogens in Democratic Republic of Congo. Parasit Vectors 2019; 12:290. [PMID: 31174587 PMCID: PMC6555951 DOI: 10.1186/s13071-019-3540-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Accepted: 05/29/2019] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Head louse, Pediculus humanus capitis, is an obligatory blood-sucking ectoparasite, distributed worldwide. Phylogenetically, it occurs in five divergent mitochondrial clades (A-E); each exhibiting a particular geographical distribution. Recent studies suggest that, as in the case of body louse, head louse could be a disease vector. We aimed to study the genetic diversity of head lice collected in the Democratic Republic of the Congo (DR Congo) and to screen for louse-borne pathogens in these lice. METHODS A total of 181 head lice were collected from 27 individuals at the Monkole Hospital Center located in Kinshasa. All head lice were genotyped and screened for the presence of louse-borne bacteria using molecular methods. We searched for Bartonella quintana, Borrelia recurrentis, Rickettsia prowazekii, Anaplasma spp., Yersinia pestis, Coxiella burnetii and Acinetobacter spp. RESULTS Among these head lice, 67.4% (122/181) belonged to clade A and 24.3% (44/181) belonged to clade D. Additionally, for the first time in this area, we found clade E in 8.3% (15/181) of tested lice, from two infested individuals. Dual infestation with clades A and D was observed for 44.4% individuals. Thirty-three of the 181 head lice were infected only by different bacterial species of the genus Acinetobacter. Overall, 16 out of 27 individuals were infested (59.3%). Six Acinetobacter species were detected including Acinetobacter baumannii (8.3%), Acinetobacter johnsonii (1.7%), Acinetobacter soli (1.7%), Acinetobacter pittii (1.7%), Acinetobacter guillouiae (1.1%), as well as a new potential species named "Candidatus Acinetobacter pediculi". CONCLUSIONS To our knowledge, this study reports for the first time, the presence of clade E head lice in DR Congo. This study is also the first to report the presence of Acinetobacter species DNAs in human head lice in DR Congo.
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Affiliation(s)
- Celia Scherelle Boumbanda Koyo
- Aix Marseille Univ, IRD, AP-HM, SSA, VITROME, Marseille, France.,IHU-Méditerranée Infection, Marseille, France.,Unité d'Evolution Epidémiologie et Résistances Parasitaires (UNEEREP), Centre International de Recherches Médicales de Franceville (CIRMF), Franceville, Gabon.,Ecole Doctorale Régionale en Infectiologie Tropicale d'Afrique Centrale, Franceville, Gabon
| | - Nadia Amanzougaghene
- Aix Marseille Univ, IRD, AP-HM, MEPHI, Marseille, France.,IHU-Méditerranée Infection, Marseille, France
| | - Bernard Davoust
- Aix Marseille Univ, IRD, AP-HM, MEPHI, Marseille, France.,IHU-Méditerranée Infection, Marseille, France
| | - Leon Tshilolo
- Monkole Mother and Child Hospital, Kinshasa, Democratic Republic of the Congo
| | - Jean Bernard Lekana-Douki
- Unité d'Evolution Epidémiologie et Résistances Parasitaires (UNEEREP), Centre International de Recherches Médicales de Franceville (CIRMF), Franceville, Gabon.,Ecole Doctorale Régionale en Infectiologie Tropicale d'Afrique Centrale, Franceville, Gabon.,Département de Parasitologie-Mycologie Médecine Tropicale, Faculté de Médecine, Université des Sciences de la Santé (USS), Libreville, Gabon
| | - Didier Raoult
- Aix Marseille Univ, IRD, AP-HM, MEPHI, Marseille, France.,IHU-Méditerranée Infection, Marseille, France
| | - Oleg Mediannikov
- Aix Marseille Univ, IRD, AP-HM, MEPHI, Marseille, France. .,IHU-Méditerranée Infection, Marseille, France.
| | - Florence Fenollar
- Aix Marseille Univ, IRD, AP-HM, SSA, VITROME, Marseille, France.,IHU-Méditerranée Infection, Marseille, France
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Mitochondrial diversity and phylogeographic analysis of Pediculus humanus reveals a new Amazonian clade “F”. INFECTION GENETICS AND EVOLUTION 2019; 70:1-8. [DOI: 10.1016/j.meegid.2019.02.006] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2018] [Revised: 02/02/2019] [Accepted: 02/07/2019] [Indexed: 01/04/2023]
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Guellil M, Kersten O, Namouchi A, Bauer EL, Derrick M, Jensen AØ, Stenseth NC, Bramanti B. Genomic blueprint of a relapsing fever pathogen in 15th century Scandinavia. Proc Natl Acad Sci U S A 2018; 115:10422-10427. [PMID: 30249639 PMCID: PMC6187149 DOI: 10.1073/pnas.1807266115] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Louse-borne relapsing fever (LBRF) is known to have killed millions of people over the course of European history and remains a major cause of mortality in parts of the world. Its pathogen, Borrelia recurrentis, shares a common vector with global killers such as typhus and plague and is known for its involvement in devastating historical epidemics such as the Irish potato famine. Here, we describe a European and historical genome of Brecurrentis, recovered from a 15th century skeleton from Oslo. Our distinct European lineage has a discrete genomic makeup, displaying an ancestral oppA-1 gene and gene loss in antigenic variation sites. Our results illustrate the potential of ancient DNA research to elucidate dynamics of reductive evolution in a specialized human pathogen and to uncover aspects of human health usually invisible to the archaeological record.
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Affiliation(s)
- Meriam Guellil
- Centre for Ecological and Evolutionary Synthesis, Department of Biosciences, University of Oslo, N-0316 Oslo, Norway;
| | - Oliver Kersten
- Centre for Ecological and Evolutionary Synthesis, Department of Biosciences, University of Oslo, N-0316 Oslo, Norway
| | - Amine Namouchi
- Centre for Ecological and Evolutionary Synthesis, Department of Biosciences, University of Oslo, N-0316 Oslo, Norway
| | - Egil L Bauer
- Norwegian Institute for Cultural Heritage Research, N-0155 Oslo, Norway
| | - Michael Derrick
- Norwegian Institute for Cultural Heritage Research, N-0155 Oslo, Norway
| | - Anne Ø Jensen
- Norwegian Institute for Cultural Heritage Research, N-0155 Oslo, Norway
| | - Nils C Stenseth
- Centre for Ecological and Evolutionary Synthesis, Department of Biosciences, University of Oslo, N-0316 Oslo, Norway;
| | - Barbara Bramanti
- Centre for Ecological and Evolutionary Synthesis, Department of Biosciences, University of Oslo, N-0316 Oslo, Norway;
- Department of Biomedical and Specialty Surgical Sciences, Faculty of Medicine, Pharmacy and Prevention, University of Ferrara, 35-441221 Ferrara, Italy
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Amanzougaghene N, Fenollar F, Nappez C, Ben-Amara A, Decloquement P, Azza S, Bechah Y, Chabrière E, Raoult D, Mediannikov O. Complexin in ivermectin resistance in body lice. PLoS Genet 2018; 14:e1007569. [PMID: 30080859 PMCID: PMC6108520 DOI: 10.1371/journal.pgen.1007569] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Revised: 08/24/2018] [Accepted: 07/16/2018] [Indexed: 12/14/2022] Open
Abstract
Ivermectin has emerged as very promising pediculicide, particularly in cases of resistance to commonly used pediculicides. Recently, however, the first field-evolved ivermectin-resistance in lice was reported. To gain insight into the mechanisms underlying ivermectin-resistance, we both looked for mutations in the ivermectin-target site (GluCl) and searched the entire proteome for potential new loci involved in resistance from laboratory susceptible and ivermectin-selected resistant body lice. Polymorphism analysis of cDNA GluCl showed no non-silent mutations. Proteomic analysis identified 22 differentially regulated proteins, of which 13 were upregulated and 9 were downregulated in the resistant strain. We evaluated the correlation between mRNA and protein levels by qRT-PCR and found that the trend in transcriptional variation was consistent with the proteomic changes. Among differentially expressed proteins, a complexin i.e. a neuronal protein which plays a key role in regulating neurotransmitter release, was shown to be the most significantly down-expressed in the ivermectin-resistant lice. Moreover, DNA-mutation analysis revealed that some complexin transcripts from resistant lice gained a premature stop codon, suggesting that this down-expression might be due, in part, to secondary effects of a nonsense mutation inside the gene. We further confirmed the association between complexin and ivermectin-resistance by RNA-interfering and found that knocking down the complexin expression induces resistance to ivermectin in susceptible lice. Our results provide evidence that complexin plays a significant role in regulating ivermectin resistance in body lice and represents the first evidence that links complexin to insecticide resistance.
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Affiliation(s)
- Nadia Amanzougaghene
- Aix Marseille Univ, IRD, APHM, MEPHI, IHU-Méditerranée Infection, Marseille, France
| | - Florence Fenollar
- Aix Marseille Univ, IRD, APHM, VITROME, IHU-Méditerranée Infection, Marseille, France
| | - Claude Nappez
- Aix Marseille Univ, IRD, APHM, VITROME, IHU-Méditerranée Infection, Marseille, France
| | - Amira Ben-Amara
- Aix Marseille Univ, IRD, APHM, MEPHI, IHU-Méditerranée Infection, Marseille, France
| | | | - Said Azza
- Aix Marseille Univ, IRD, APHM, MEPHI, IHU-Méditerranée Infection, Marseille, France
| | - Yassina Bechah
- Aix Marseille Univ, IRD, APHM, VITROME, IHU-Méditerranée Infection, Marseille, France
| | - Eric Chabrière
- Aix Marseille Univ, IRD, APHM, MEPHI, IHU-Méditerranée Infection, Marseille, France
| | - Didier Raoult
- Aix Marseille Univ, IRD, APHM, MEPHI, IHU-Méditerranée Infection, Marseille, France
- * E-mail: (DR); (OM)
| | - Oleg Mediannikov
- Aix Marseille Univ, IRD, APHM, MEPHI, IHU-Méditerranée Infection, Marseille, France
- * E-mail: (DR); (OM)
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Mutations in GluCl associated with field ivermectin-resistant head lice from Senegal. Int J Antimicrob Agents 2018; 52:593-598. [PMID: 30055248 DOI: 10.1016/j.ijantimicag.2018.07.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Revised: 06/28/2018] [Accepted: 07/07/2018] [Indexed: 12/25/2022]
Abstract
Through its unique mode of action, ivermectin represents a relatively new and very promising tool to fight against human lice, especially in cases of resistance to commonly used pediculicides. However, ivermectin resistance in the field has already begun to be reported. Therefore, understanding the mechanisms involved is a key step in delaying and tackling this phenomenon. In this study, field head lice with confirmed clinical resistance to ivermectin in rural human populations from Senegal were subjected to genetic analysis targeting the GluCl gene, the primary target of ivermectin known to be involved in resistance. Through DNA-polymorphism analysis, three relevant non-synonymous mutations in GluCl which were found only in ivermectin-resistant head lice (76 head lice tested), were identified. The A251V mutation found in the TM3 transmembrane domain was the most prevalent (allelic frequency of 0.33), followed by the S46P mutation (0.28) located at the N-terminal extracellular domain. The H272R was in the M3-M4 linker transmembrane region of GluCl and has shown the lowest frequency (0.18). Polymerase chain reaction restriction fragment length polymorphism (PCR-RFLP) diagnostic assays were also developed for their accurate genotyping. Our study is the first to report the presence of GluCl point mutations in clinical ivermectin-resistant head lice occurring in rural human populations of Senegal.
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Detection of bacterial pathogens in clade E head lice collected from Niger's refugees in Algeria. Parasit Vectors 2018; 11:348. [PMID: 29907122 PMCID: PMC6003154 DOI: 10.1186/s13071-018-2930-5] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Accepted: 06/01/2018] [Indexed: 12/18/2022] Open
Abstract
Background Head lice, Pediculus humanus capitis, are obligate blood-sucking parasites. Phylogenetically, they occur in five divergent mitochondrial clades (A, D, B, C and E), each having a particular geographical distribution. Recent studies have revealed that head lice, as is the case of body lice, can act as a vector for louse-borne diseases. Here, we aimed to study the genetic diversity of head lice collected from Niger’s refugees (migrant population) arriving in Algeria, northern Africa, and to look for louse-borne pathogens. Comparative head lice samples collected from indigenous population of schoolchildren (non-immigrant) were also analyzed to frame the study. Results In this study, 37 head lice samples were collected from 31 Nigerien refugees, as well as 45 head lice from 27 schoolchildren. The collection was established in three localities of eastern Algiers, north Algeria. Quantitative real-time PCR screening of pathogens bacteria and the genetic characterisation of the head lice satut were performed. Through amplification and sequencing of the cytb gene, results showed that all head lice of Nigerien refugees 37/82 (45.12%) belonged to clade E with the presence of four new haplotypes, while, of the 45 head lice of schoolchildren, 34/82 lice (41.46%) belonged to clade A and 11/82 (13.41%) belonged to clade B. Our study is the first to report the existence of clade E haplogroup in Nigerien head lice. DNA of Coxiella burnetii was detected in 3/37 (8.10%) of the head lice collected from 3 of the 31 (9.67%) migrant population. We also revealed the presence of Acinetobacter DNA in 20/37 (54.05%) of head lice collected from 25/31 (80.64%) of the Nigerien refugees, and in 25/45 (55.55%) head lice collected from 15/27 (55.55%) schoolchildren. All positive Nigerien-head lice for Acinetobacter spp. were identified as A. baumannii, while positive schoolchildren-head lice were identified as A. johnsonii 15/25 (60%), A. variabilis 8/25 (32%) and A. baumannii 2/25 (8%). Conclusions Based on these findings from head lice collected on migrant and non-migrant population, our results show, for the first time, that head lice from Niger belong to haplogroup E, and confirm that the clade E had a west African distribution. We also detected, for the first time, the presence of C. burnetii and A. baumannii in these Nigerien head lice. Nevertheless, further studies are needed to determine whether the head lice can transmit these pathogenic bacteria from one person to another.
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Yingklang M, Sengthong C, Haonon O, Dangtakot R, Pinlaor P, Sota C, Pinlaor S. Effect of a health education program on reduction of pediculosis in school girls at Amphoe Muang, Khon Kaen Province, Thailand. PLoS One 2018; 13:e0198599. [PMID: 29889851 PMCID: PMC5995376 DOI: 10.1371/journal.pone.0198599] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Accepted: 05/22/2018] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND Pediculosis caused by head lice (Pediculus humanus capitis) infestation is still an important health problem in schoolchildren, especially girls, worldwide, including in Thailand. Although pediculicidal agents effectively kill head lice, the re-infestation rate is still high. Thus, prevention is an important strategy for any sustainable control program. We aimed to develop and evaluate the efficacy of a health education program for increasing knowledge, changing attitudes and promoting preventive practices to reduce prevalence of pediculosis among school girls in Amphoe Muang, Khon Kaen, northeastern Thailand. METHODOLOGY Six schools were selected using multistage simple randomization and were allocated into intervention or control groups. A total of 267 girls was enrolled from these schools. A "knowledge, attitude and practice" (KAP) questionnaire, consent forms and health education materials were constructed and tested by experts and in one pilot school before the main investigation. Baseline prevalence of adult lice and nits was determined. The health education package was given only to the intervention group. The KAP questionnaire was re-evaluated at two months after intervention. RESULTS At baseline, the prevalence and intensity of head lice infestation, and the KAP scores did not differ significantly between the two groups. After re-evaluation at two months, the KAP score was significantly greater in the intervention group. A significant decrease of the infestation rate from 59% to 44% was observed in the intervention group, whereas infestation increased in the control group (from 56% to 65%). The incidence of new cases in the intervention group (6.14%) was lower than in the control group (12.62%). CONCLUSION These findings indicated that the newly-established health education package is an effective tool for increasing KAP and reducing head lice infestation in school girls. Efforts to combat pediculosis in schoolchildren elsewhere may consider including this, or a similar, health education package in their programs.
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Affiliation(s)
- Manachai Yingklang
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Chatchawan Sengthong
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Ornuma Haonon
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Rungtiwa Dangtakot
- Biomedical Science Program, Graduate School, Khon Kaen University, Khon Kaen, Thailand
- Centre for Research and Development of Medical Diagnostic Laboratories, Faculty of Associated Medical Sciences, Khon Kaen University, Khon Kaen, Thailand
| | - Porntip Pinlaor
- Centre for Research and Development of Medical Diagnostic Laboratories, Faculty of Associated Medical Sciences, Khon Kaen University, Khon Kaen, Thailand
| | - Chulaporn Sota
- Department of Health Education, Faculty of Public Health, Khon Kaen University, Khon Kaen, Thailand
| | - Somchai Pinlaor
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
- * E-mail:
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Louni M, Mana N, Bitam I, Dahmani M, Parola P, Fenollar F, Raoult D, Mediannikov O. Body lice of homeless people reveal the presence of several emerging bacterial pathogens in northern Algeria. PLoS Negl Trop Dis 2018; 12:e0006397. [PMID: 29664950 PMCID: PMC5922582 DOI: 10.1371/journal.pntd.0006397] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Revised: 04/27/2018] [Accepted: 03/21/2018] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Human lice, Pediculus humanus, are obligate blood-sucking parasites. Body lice, Pediculus h. humanus, occur in two divergent mitochondrial clades (A and D) each exhibiting a particular geographic distribution. Currently, the body louse is recognized as the only vector for louse-borne diseases. In this study, we aimed to study the genetic diversity of body lice collected from homeless populations in three localities of northern Algeria, and to investigate louse-borne pathogens in these lice. METHODOLOGY/PRINCIPAL FINDINGS In this study, 524 body lice specimens were collected from 44 homeless people in three localities: Algiers, Tizi Ouzou and Boumerdès located in northern Algeria. Duplex clade specific real-time PCRs (qPCR) and Cytochrome b (cytb) mitochondrial DNA (mtDNA) analysis were performed in order to identify the mitochondrial clade. Screening of louse-borne pathogens bacteria was based on targeting specific genes for each pathogen using qPCR supplemented by sequencing. All body lice belong to clade A. Through amplification and sequencing of the cytb gene we confirmed the presence of three haplotypes: A5, A9 and A63, which is novel. The molecular investigation of the 524 body lice samples revealed the presence of four human pathogens: Bartonella quintana (13.35%), Coxiella burnetii (10.52%), Anaplasma phagocytophilum (0.76%) and Acinetobacter species (A. baumannii, A. johnsonii, A. berezeniae, A. nosocomialis and A. variabilis, in total 46.94%). CONCLUSIONS/SIGNIFICANCE To the best of our knowledge, our study is the first to show the genetic diversity and presence of several emerging pathogenic bacteria in homeless' body lice from Algeria. We also report for the first time, the presence of several species of Acinetobacter in human body lice. Our results highlight the fact that body lice may be suspected as being a much broader vector of several pathogenic agents than previously thought. Nevertheless, other studies are needed to encourage epidemiological investigations and surveys of louse-associated infections.
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Affiliation(s)
- Meriem Louni
- Aix Marseille Univ, IRD, AP-HM, SSA, VITROME, IHU-Méditerranée Infection, Marseille, France
- Laboratoire de Valorisation et Conservation des Ressources Biologiques (VALCORE), Faculté des Sciences, Université M’Hamed Bougara Boumerdes, Boumerdès, Algeria
| | - Nassima Mana
- Laboratoire Biodiversité et Environnement: Interactions, Génomes, Département de Biologie, Université des Sciences et Technologies Houari Boumediene, Bab Ezzouar, Algeria
| | - Idir Bitam
- Aix Marseille Univ, IRD, AP-HM, SSA, VITROME, IHU-Méditerranée Infection, Marseille, France
- Laboratoire Biodiversité et Environnement: Interactions, Génomes, Département de Biologie, Université des Sciences et Technologies Houari Boumediene, Bab Ezzouar, Algeria
- Ecole Supérieure des Sciences de l'Aliment et des Industries Agro-Alimentaires, Algiers, Algeria
| | - Mustapha Dahmani
- Aix-Marseille Univ, IRD, AP-HM, MEPHI, IHU-Méditerranée Infection, Marseille, France
| | - Philippe Parola
- Aix-Marseille Univ, IRD, AP-HM, MEPHI, IHU-Méditerranée Infection, Marseille, France
| | - Florence Fenollar
- Aix Marseille Univ, IRD, AP-HM, SSA, VITROME, IHU-Méditerranée Infection, Marseille, France
| | - Didier Raoult
- Aix-Marseille Univ, IRD, AP-HM, MEPHI, IHU-Méditerranée Infection, Marseille, France
| | - Oleg Mediannikov
- Aix-Marseille Univ, IRD, AP-HM, MEPHI, IHU-Méditerranée Infection, Marseille, France
- * E-mail:
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Candy K, Amanzougaghene N, Izri A, Brun S, Durand R, Louni M, Raoult D, Fenollar F, Mediannikov O. Molecular Survey of Head and Body Lice, Pediculus humanus, in France. Vector Borne Zoonotic Dis 2018; 18:243-251. [PMID: 29652646 DOI: 10.1089/vbz.2017.2206] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Human lice, Pediculus humanus, are obligate blood-sucking parasites. Phylogenetically, they belong to several mitochondrial clades exhibiting some geographic differences. Currently, the body louse is the only recognized disease vector, with the head louse being proposed as an additional vector. In this article, we study the genetic diversity of head and body lice collected from Bobigny, a town located close to Paris (France), and look for louse-borne pathogens. By amplifying and sequencing the cytb gene, we confirmed the presence of clades A and B in France. Besides, by amplifying and sequencing both cytb and cox1 gene, we reported, for the first time, the presence of clade E, which has thus far only been found in lice from West Africa. DNA from Bartonella quintana was detected in 16.7% of body lice from homeless individuals, but in none of the head lice collected from 47 families. Acinetobacter DNA was detected in 11.5% of head lice belonging to all three clades and 29.1% of body lice. Six species of Acinetobacter were identified, including two potential new ones. Acinetobacter baumannii was the most prevalent, followed by Candidatus Acinetobacter Bobigny-1, Acinetobacter calcoaceticus, Acinetobacter nosocomialis, Acinetobacter junii, and Candidatus Acinetobacter Bobigny-2. Body lice were found to be infected only with A. baumannii. These findings show for the first time, the presence of clade E head lice in France. This study is also the first to report the presence of DNAs of several species of Acinetobacter in human head lice in France.
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Affiliation(s)
- Kerdalidec Candy
- 1 Department of Parasitology-Mycology, AP-HP, Hôpital Avicenne , Bobigny, France .,2 UMR "Émergence des Pathologies Virales" (EPV: Aix-Marseille University-IRD 190-Inserm 1207-EHESP-IHU Méditerranée Infection) , Marseille, France
| | - Nadia Amanzougaghene
- 3 IRD, APHM, MEPHI, IHU-Méditerranée Infection, Aix Marseille University , Marseille, France
| | - Arezki Izri
- 1 Department of Parasitology-Mycology, AP-HP, Hôpital Avicenne , Bobigny, France .,2 UMR "Émergence des Pathologies Virales" (EPV: Aix-Marseille University-IRD 190-Inserm 1207-EHESP-IHU Méditerranée Infection) , Marseille, France
| | - Sophie Brun
- 1 Department of Parasitology-Mycology, AP-HP, Hôpital Avicenne , Bobigny, France
| | - Rémy Durand
- 1 Department of Parasitology-Mycology, AP-HP, Hôpital Avicenne , Bobigny, France
| | - Meriem Louni
- 4 IRD, APHM, VITROME, IHU-Méditerranée Infection, Aix Marseille University , Marseille, France
| | - Didier Raoult
- 3 IRD, APHM, MEPHI, IHU-Méditerranée Infection, Aix Marseille University , Marseille, France
| | - Florence Fenollar
- 4 IRD, APHM, VITROME, IHU-Méditerranée Infection, Aix Marseille University , Marseille, France
| | - Oleg Mediannikov
- 3 IRD, APHM, MEPHI, IHU-Méditerranée Infection, Aix Marseille University , Marseille, France
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