Muriel Vayssier-Taussat

Muriel Vayssier-Taussat
French National Institute for Agriculture, Food, and Environment (INRAE) | INRAE · Department of Animal Health

PhD

About

174
Publications
32,578
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5,391
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October 2001 - present
September 2001 - present

Publications

Publications (174)
Preprint
Full-text available
There is growing concern about climate change and its impact on human health. Specifically, global warming could increase the probability of emerging infectious diseases, notably because of changes in the geographical and seasonal distributions of disease vectors such as mosquitoes and ticks. For example, the range of Ixodes ricinus, the most commo...
Article
Full-text available
A scarcity of information on the occurrence of zoonotic vector‐borne pathogens (VBPs), alongside a lack of human and animal health authorities’ awareness of pre‐existing data, augment the risk of VBP infection for local people and limit our ability to establish control programs. This holds especially true in low‐middle income countries such as Bosn...
Article
Full-text available
Ixodes ricinus ticks (Acari: Ixodidae) are the most important vector for Lyme borreliosis in Europe. As climate change might affect their distributions and activities, this study aimed to determine the effects of environmental factors, i.e., meteorological, bioclimatic, and habitat characteristics on host-seeking (questing) activity of I. ricinus n...
Preprint
Full-text available
Ixodes ricinus ticks (Acari: Ixodidae) are the most important vector for Lyme borreliosis in Europe. As environmental and climate changes might affect the distribution and activity of tick populations, this study aimed to determine the effects of environmental factors, i.e., meteorological, bioclimatic, and habitat characteristics on questing activ...
Article
Full-text available
Background Ticks transmit pathogens of medical and veterinary importance and are an increasing threat to human and animal health. Assessing disease risk and developing new control strategies requires identifying members of the tick-borne microbiota as well as their temporal dynamics and interactions. Methods Using high-throughput sequencing, we st...
Article
Over recent years, a multitude of pathogens have been reported to be tick-borne. Given this, it is unsurprising that these might co-exist within the same tick, however our understanding of the interactions of these agents both within the tick and vertebrate host remains poorly defined. Despite the rich diversity of ticks, relatively few regularly f...
Preprint
Full-text available
Background Ticks transmit pathogens of medical and veterinary importance, and represent an increasing threat for human and animal health. Important steps in assessing disease risk and developing possible new future control strategies involve identifying tick-borne microbes, their temporal dynamics and interactions. Methods Using high throughput se...
Article
« Moi qui suis si peu médecin, si peu vétérinaire… La science est une… C'est l'homme seulement qui en raison de la faiblesse de son intelligence, y établit des catégories. » Extrait du discours de 1880 de Louis Pasteur à la Société Centrale de Médecine Vétérinaire, ancêtre de l’Académie Vétérinaire de France.La France est le pays de Descartes, de C...
Article
Full-text available
Background The development of high-throughput sequencing technologies has substantially improved analysis of bacterial community diversity, composition, and functions. Over the last decade, high-throughput sequencing has been used extensively to identify the diversity and composition of tick microbial communities. However, a growing number of studi...
Article
Full-text available
Despite the high burden of vector-borne disease in (sub)tropical areas, few information are available regarding the diversity of tick and tick-borne pathogens circulating in the Caribbean. Management and control of vector-borne disease require actual epidemiological data to better assess and anticipate the risk of (re)emergence of tick-borne diseas...
Article
Full-text available
Ticks transmit a wide variety of pathogens including bacteria, parasites and viruses. Over the last decade, numerous novel viruses have been described in arthropods, including ticks, and their characterization has provided new insights into RNA virus diversity and evolution. However, little is known about their ability to infect vertebrates. As ver...
Article
Full-text available
Ticks transmit the highest variety of pathogens impacting human and animal health worldwide. It is now well established that ticks also harbour a microbial complex of coexisting symbionts, commensals and pathogens. With the development of high throughput sequencing technologies, studies dealing with such diverse bacterial composition in tick consid...
Article
Full-text available
Abstract Anaplasma phagocytophilum is the agent of tick-borne fever, equine, canine and human granulocytic anaplasmosis. The common route of A. phagocytophilum transmission is through a tick bite, the main vector in Europe being Ixodes ricinus. Despite the apparently ubiquitous presence of the pathogen A. phagocytophilum in ticks and various wild a...
Preprint
Ticks transmit a wide variety of pathogens including bacteria, parasites and viruses. Over the last decade, numerous novel viruses have been described in arthropods, including ticks, and their characterization has provided new insights into RNA virus diversity and evolution. However, little is known about their ability to infect vertebrates. As ver...
Article
Full-text available
Background: Ixodes ricinus is the predominant tick species in Europe and the primary pathogen vector for both humans and animals. These ticks are frequently involved in the transmission of Borrelia burgdorferi (sensu lato), the causative agents of Lyme borreliosis. While much more is known about I. ricinus tick-borne pathogen composition, informat...
Article
Full-text available
Jingmenvirus is a recently identified group of segmented RNA viruses phylogenetically linked with unsegmented Flaviviridae viruses. Primarily identified in various tick genera originating in China, Jingmenvirus geographical distribution has rapidly expanded to cover Africa, South America, Caribbean, and Europe. The identification of Jingmen-related...
Article
Full-text available
Emerging zoonoses caused by previously unknown agents are one of the most important challenges for human health because of their inherent inability to be predictable, conversely to emergences caused by previously known agents that could be targeted by routine surveillance programs. Emerging zoonotic infections either originate from increasing conta...
Article
Corsica is a mountainous French island in the north‐west of the Mediterranean Sea presenting a large diversity of natural environments where many interactions between humans, domestic animals and wild fauna occur. Despite this favourable context, tick‐borne pathogens (TBPs) have not systematically been investigated. In this study, a large number of...
Preprint
Full-text available
Corsica is a touristic mountainous French island in the north-west of the Mediterranean Sea presenting a large diversity of natural environments where many interactions between humans, domestic animals and wild fauna occur. Despite this favourable context, tick-borne pathogens (TBPs) have not systematically been investigated. In this study, a large...
Preprint
Full-text available
Background: The development of high throughput sequencing (HTS) technologies has substantially improved analysis of bacterial community diversity, composition, and functions. Over the last decade, HTS has been used extensively to identify the diversity and composition of tick microbial communities. However, a growing number of studies are warning a...
Article
Full-text available
Background Borrelia miyamotoi clusters phylogenetically among relapsing fever borreliae, but is transmitted by hard ticks. Recent recognition as a human pathogen has intensified research into its ecology and pathogenic potential.AimsWe aimed to provide a timely critical integrative evaluation of our knowledge on B. miyamotoi, to assess its public h...
Preprint
Full-text available
Background Ixodes ricinus is the predominant tick species in Europe and the primary pathogen vector for both humans and animals. These ticks are frequently involved in the transmission of Borrelia burgdorferi sensu lato, the causative agents of Lyme borreliosis. While much more is known about I. ricinus tick-borne pathogen composition, information...
Article
Full-text available
Background The tick midgut and salivary glands represent the primary organs for pathogen acquisition and transmission, respectively. Specifically, the midgut is the first organ to have contact with pathogens during the blood meal uptake, while salivary glands along with their secretions play a crucial role in pathogen transmission to the host. Curr...
Preprint
Full-text available
Despite the high burden of vector-borne disease in (sub)-tropical areas, few information are available regarding the diversity of tick and tick-borne pathogens circulating in the Caribbean. Management and control of vector-borne disease require actual epidemiological data to better assess and anticipate the risk of (re)-emergence of tick-borne dise...
Article
Full-text available
Background Anaplasma ovis is a major cause of small ruminant anaplasmosis, a tick-borne disease mainly affecting small ruminants in tropical and subtropical regions of the world. Due to health and production problems in dairy goat flocks in Corsica, France, and the demonstration of A. ovis infection in some animals, an extensive survey was conducte...
Preprint
Full-text available
Background: Tick midgut and salivary glands represent the primary organs for pathogen acquisition and transmission, respectively. Specifically, the midgut is the first organ to have contact with pathogens during the blood meal uptake, while salivary glands along with their secretions play a crucial role in pathogen transmission to the host. Current...
Article
Full-text available
Bartonellosis is an infectious disease caused by Bartonella species that are distributed worldwide with animal and public health impact varying according to Bartonella species, infection phase, immunological characteristics, and geographical region. Bartonella is widely present in various mammals including cats, rodents, ruminants, and humans. At l...
Data
The figure displays a guide to the application of network analysis to microbiome studies. Firstly, co-occurrence (i.e., the number of times a genus co-occurs with other genera of bacteria) of microbial taxa among the samples is calculated. The co-occurrence table is used as input for network analysis software (A). The co-occurrence table is used to...
Data
The networks of the genera of bacteria detected in ticks-forest (A), voles-forest (B), ticks-ecotone (C), and voles-ecotone (D). Colors mean for different communities of bacteria, i.e., bacteria that appear together with a higher affinity among them than with others. The size of each node is proportional to the Betweenness Centrality, and the size...
Data
The set of complete raw data used in this study, for each individual vole or tick, in either forest or ecotone. This is the dataset used for all calculations and to build the networks. The table includes information about the carrier (tick or vole), the sex of the carrier (M: male; F: female), the landscape (forest or ecotone), and the number of OT...
Data
Genetic distances of the genera of bacteria detected in this study, obtained from the sequences detailed in Table S1. The accession number of each sequence in GenBank is included together with the genus of bacteria.
Data
General data about the indexes of the four networks generated for voles or ticks, in either forest or ecotone. Included are the genera of bacteria, and for each genus the values of Weight, Betweenness Centrality, Closeness Centrality, Eigenvector Centrality, PageRank and Clustering coefficient.
Data
Rarefaction curves estimated from reads obtained for voles in forest (A) and ecotone (B) and ticks in forest (C), and ecotone (D).
Data
Frequency distribution of the number of reads recorded per tick/vole in either forest or ecosystem. (A) ticks, forest; (B) voles, forest; (C) ticks, ecotone; (D): voles, ecotone.
Data
Data about all the genera of bacteria (including higher taxonomic ranks, like Family and Order) detected in voles or ticks. This table includes the percentage of times that each genus appeared in a carrier (voles or ticks), and the number of reads of each genus found in either voles or ticks, in either forest or ecotone. In example, the genus Midic...
Data
The phylogenetic tree of all the genera of bacteria detected in this study, as obtained from the data in Tables S1, S2.
Data
Frequency distribution of the number of bacterial general recorded per tick/vole in either forest or ecosystem. (A) ticks, forest; (B) voles, forest; (C) ticks, ecotone; (D) voles, ecotone.
Data
The relationships between Betweenness Centrality (BNC), Clustering coefficient (CC) and PageRank in the networks of co-occurring bacteria in ticks-forest (A), ticks-ecotone (B), voles-forest (C), and voles-ecotone (D). Each plot is colored and sized according to the values of PageRank and placed in the intersection of values of BNC and CC. The info...
Data
The log-ratio of the number of reads of each genus of bacteria (voles/ticks or ticks/voles) plotted along the range of weights of each genus in the four networks of co-occurring bacteria. The color and the size of each dot and the size of the label of the genus show the log-ratio between the number of reads. The information is the same as in Figure...
Data
16S rDNA nucleotide sequences of the genera of 126 bacteria detected in either ticks or voles, in “fasta” format, and used to build the phylogenetic tree of detected microorganisms.
Article
Full-text available
We aimed to develop a framework, based on graph theory, to capture the ecological meaning behind pure pair comparisons of microbiome-derived data. As a proof of concept, we applied the framework to analyze the co-occurrence of bacteria in either Ixodes ricinus ticks or the spleen of one of their main hosts, the vole Myodes glareolus. As a secondary...
Article
Ixodid ticks are competent vectors for multiple pathogens, several of which cause infections in human. The medical importance of tick-borne pathogens is well known, yet unanswered questions remain regarding the occurrence of pathogens such as Rickettsia spp., Anaplasma phagocytophilum, and "Candidatus Neoehrlichia mikurensis" in questing ticks in R...
Article
Ticks and the pathogens they transmit constitute a growing burden for human and animal health worldwide. Traditionally, tick-borne pathogen detection has been carried out using PCR-based methods that rely in known sequences for specific primers design. This approach matches with the view of a 'single-pathogen' epidemiology. Recent results, however,...
Article
Full-text available
Ticks are obligate hematophagous arthropods of significant importance to human and veterinary medicine. They transmit a vast array of pathogens, including bacteria, viruses, protozoa, and helminths. Most epidemiological data on ticks and tick-borne pathogens (TBPs) in the West Indies are limited to common livestock pathogens such as Ehrlichia rumin...
Conference Paper
Effective tick-based surveillance is essential for monitoring human and/or animal disease emergence. Aim of the present survey was to screen a significant number of individual Mediterranean tick species (n=1176/11 species) collected from farm animals in Greece for the presence of 39 pathogens/symbionts by employing a high- throughput microfluidic r...
Data
Setting and results of the trapping sessions, 10–21 January 2011, on sites 1 and 2 in Chanteraines park (Hauts-de-Seine, France). (PDF)
Data
Model 2 results. Adjusted odds ratios and 95% confidence intervals for pathogen occurrence in R. norvegicus from Chanteraines park calculated using the best-fitted general linear model identified using a stepwise backward selection on the Akaike Information Criterion. (PDF)
Data
Summary of the results per site and sex. Median and range (minimum–maximum) are given for the quantitative data, number and percentage for the qualitative data. One animal on site 1 was not sexed, weight data were missing for two females and two males on site 1, which therefore could not have been categorized as young or adult. (PDF)
Data
Results of the correspondence analysis (implemented in the Genetix software) of the brown rat population structure in Chanteraines (correspondence analysis was adapted to individual diploid genotypes). Individuals from site 1 are in black, red signs represent individuals from site 2. Identification names of the four individuals outside the main sca...
Data
Structure Harvester output. Plot of mean likelihood L(K) and variance per K value from Structure (86 individuals genotyped for 13 polymorphic microsatellite loci). (PDF)
Data
Flow chart illustrating the samples taken on the trapped brown rats, the storing processes and subsequent analyses for each sample. (TIF)
Data
Results of the microsatellite genotyping. (XLSX)
Article
Full-text available
Identifying Borrelia burgdorferi as the causative agent of Lyme disease in 1981 was a watershed moment in understanding the major impact that tick-borne zoonoses can have on public health worldwide, particularly in Europe and the USA. The medical importance of tick-borne diseases has long since been acknowledged, yet little is known regarding the o...