Karine Chalvet-Monfray

VetAgro Sup, Campus vétérinaire, Marcy l'Etoile · UMR EPIA INRA/VAS

Foot-and-mouth disease (FMD) is an important endemic disease in livestock in Southeast Asia. Transboundary movement of animals may result in the transnational disease spread. A major cattle market is located at the Thailand-Myanmar border, where most cattle imported from Myanmar are traded. In this study, we built a stochastic susceptible-exposed-i...

Europe faces regular introductions and reintroductions of bluetongue virus (BTV) serotypes, most recently exemplified by the incursion of serotype 3 in the Netherlands. Although the long‐distance wind dispersal of the disease vector, Culicoides spp., is recognized as a virus introduction pathway, it remains understudied in risk assessments. A Quant...

The epizootic hemorrhagic disease virus (EHDV) is a novel emerging threat for the European livestock sector. First detected in Sardinia and southern Spain at the end of 2022, this transboundary disease emerged in France in September 2023 despite restrictions on animal movement and enhanced surveillance protocols. Although virus spread is believed t...

Background Forest cover has undergone significant changes, which have accelerated over recent decades. Acari vectors such as ticks and chigger mites are intricately linked to forest ecosystems because of the suitable hosts and microclimates they provide. However, the implications of forest cover change and dynamics on acari vectors and their pathog...

In Canada, the periodic circulation of West Nile Virus (WNV) is difficult to predict and, beyond climatic factors, appears to be related to the migratory movements of infected birds from the southern United States. This hypothesis has not yet been explored in a spatially distributed model. The main objective of this work was to develop a spatially...

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 exam- ple, the range of Ixodes ricinus, the most com...

Background A recent dramatic surge in pet ownership has been observed across metropolitan areas in Asia. To date, there is a dearth of information on the risk associated with pet ownership for the transmission of parasites on a large scale in Asia, despite this continent giving rise to the largest burden of zoonotic infections worldwide. Methods W...

Leptospirosis is a zoonotic disease-causing illness in both humans and animals resulting in related economic impacts due to production loss as well as prevention and control efforts. Several mathematical models have been proposed to study the dynamics of infection but none of them has so far taken into account the dynamics of seroconversion. In thi...

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...

Edema disease affects domestic pigs and is characterized by acute, often fatal, enterotoxaemia caused by strains of Shiga toxin-producing Escherichia coli (STEC). From 2013, outbreaks of this disease occured for the first time in wild boars, in France, under natural conditions. Epidemiological investigations suggest a strong seasonality for this di...

Leptospirosis is a zoonotic disease-causing illness in both humans and animals resulting in related economic impacts due to production loss as well as prevention and control efforts. Several mathematical models have been proposed to study the dynamics of infection but none of them has so far taken into account the dynamics of seroconversion. In thi...

The tick Ixodes ricinus is widely distributed across Europe and is responsible for the transmission of several pathogens to humans and animals. In this study, we used a knowledge-based method to map variations in habitat suitability for I. ricinus ticks throughout continental France and Corsica. The multi-criteria decision analysis (MCDA) integrate...

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...

Leptospirosis is a globally important zoonotic disease. The disease is particularly important in tropical and subtropical countries. Infections in humans can be caused by exposure to infected animals or contaminated soil or water, which are suitable for Leptospira. To explore the cluster area, the Global Moran’s I index was calculated for incidence...

The survival of ectothermic species is heavily dependent on environmental conditions, such as temperature and water balance. Understanding their survival responses to abiotic factors could help predict impacts of climate change on their population dynamics and human health. However, making a statistical inference and formulating a predictive model...

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...

Leptospirosis is a globally important zoonotic disease. The disease is particularly important in tropical and subtropical countries. Infections in humans can be caused by exposure to infected animals or contaminated soil or water, which are suitable for Leptospira . To explore the cluster area, the Global Moran’s I index was calculated for incidenc...

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...

As international trade constitutes one of the main spread pathways of diseases, a better understanding of the trade behaviors of countries will help identify strengths and areas for improvement in the approach of national authorities to controlling poultry diseases globally. Using data reported to the United Nations Comtrade and the World Organisat...

The epidemic of leptospirosis in humans occurs annually in Thailand. In this study, we have developed mathematical models to investigate transmission dynamics between humans, animals, and a contaminated environment. We compared different leptospire transmission models involving flooding and weather conditions, shedding and multiplication rate in a...

Background: As international trade constitutes one of the main potential spread pathways, a better understanding of the trade behaviors of countries will help identify strengths and areas for improvement in the approach of national authorities to controlling poultry diseases globally. Methods: Using data reported to the United Nations Comtrade and...

Tick-borne diseases have a complex epidemiology that depends on different ecological communities, associating several species of vertebrate hosts, vectors and pathogens. While most studies in Europe are focused on Ixodes ricinus, other Ixodes species may also be involved in the transmission or maintenance of pathogens. This is the case of Ixodes fr...

Background In Europe, ticks are responsible for the transmission of several pathogens of medical importance, including bacteria of the Borrelia burgdorferi ( s.l .) complex, the agents of Lyme borreliosis. In France, the Auvergne Rhône-Alpes region is considered a hot spot for human tick-borne pathogen infections, with an estimated annual rate of 1...

Background: Gastroesophageal reflux (GER) has been reported to be a common finding in dogs under general anesthesia. Objectives: The aim of this retrospective study was to assess the esophageal and gastric contents in a population of dogs undergoing computed tomographic myelography (myelo-CT) examination and to evaluate the factors influencing t...

Contexte Le changement climatique est susceptible d’affecter la santé humaine, avec des effets spécifiques ou aggravés sur la santé de certains professionnels. But Les travaux de l’Anses visaient à identifier les risques professionnels susceptibles d’être impactés par le changement climatique. Méthode L’Anses a coordonné cette expertise confiée à...

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...

Background In 2013, an outbreak of edema disease in a population of wild boars (Sus scrofa) took place. This was the first described case as reported worldwide. An enterotoxigenic Escherichia coli (presenting the Stx2e and F18 virulence factors) is the main pathogen for this disease in wild boar. The alpha-1-fucosyltransferase gene (FUT1) has been...

Pet owner compliance is essential for the success of veterinary healthcare strategies. As some parasites are zoonotic, consistent parasite control is an integral part of the One-Health strategy. Highly palatable formulations help ensure compliance, as they offer a positive experience for the dog and the owner. This study was conducted to ascertain...

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...

Chercheurs et spécialistes des laboratoires publics et privés se sont mobilisés pour centraliser et synthétiser, dans ce nouveau cahier, les effets du changement climatique sur la santé en région Provence-Alpes-Côte d’Azur et proposer des actions pour en limiter les conséquences. Pour citation : Les cahiers du GREC-SUD édités par l’Association pou...

La notion de « santé publique » a évolué au cours du XXe siècle, en lien avec l’évolution des rapports au progrès scientifique et la montée des considérations environnementales. Elle fut portée par une demande citoyenne forte : principe de précaution, justice environnementale et droit à la santé. À l’échelle internationale, les enjeux de santé se s...

The objective of this study was (1) to describe the US appearance and obtain reference values for the uterus and ovaries in nongravid and gravid queens with histologically confirmed reproductive tracts without disorders, (2) to provide US measurements of the reproductive tract compared to gross macroscopic and water-bath post-OVH US measurements in...

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...

Tick-borne diseases have a complex epidemiology that depends on different ecological communities, associating several species of vertebrate hosts, vectors and pathogens. While most studies in Europe are focused on Ixodes ricinus, the common sheep tick, other Ixodes species may also be involved in the transmission or maintenance of different pathoge...

Background Leptospirosis is an important zoonotic disease worldwide, caused by spirochetes bacteria of the genus Leptospira. In Thailand, cattle and buffalo used in agriculture are in close contact with human beings. During flooding, bacteria can quickly spread throughout an environment, increasing the risk of leptospirosis infection. The aim of th...

Highly Pathogenic Avian Influenza (HPAI) is of major importance for human and animal health because of high morbidity and mortality in poultry and the potential for transmission of this zoonotic pathogen to humans. Knowledge of HPAI epidemiology in avian populations and practical information on the temporal and spatial spread of the disease after i...

https://www.anses.fr/fr/system/files/AP2013SA0216Ra.pdf

Objectives: To prospectively describe the clinical and biological impact of vector-borne haemopathogens in anaemic dogs in France and occurrence of haemolysis. Materials and methods: This prospective descriptive cohort study includes 134 client-owned dogs that were anaemic on admission at the Veterinary Teaching Hospital of VetAgro Sup, Lyon, Fr...

Background Leptospirosis is a worldwide zoonotic bacterial disease caused by infection with leptospires. Leptospirosis in humans and livestock is an endemic and epidemic disease in Thailand. Livestock may act as reservoirs for leptospires and source for human infection. Methodology/Principal findings Data on leptospirosis infection in humans and l...

The serovar association distribution in buffaloes and pigs in 5 regions. (TIF)

Distribution of buffaloes, cattle, pigs, and humans exhibiting different MAT titers against Leptospira serovarsa. (DOCX)

Seroprevalence of serovar association by species and region. (DOCX)

Seropositivity by species and region. (PDF)

The serovar association distribution in cattle and humans in 5 regions. (TIF)

The seasonal weather-driven activity of the tick Ixodes ricinus is frequently explored using multisite surveys. This study aimed to investigate the statistical modeling of seasonal trends in the activity of I. ricinus nymphs when both the influence of abiotic factors and spatial heterogeneity were taken into account. Time series data of abiotic cov...

L’anémie est un syndrome fréquemment rencontré en pratique quotidienne chez le chien dont le diagnostic étiologique permet l’initiation d’un traitement approprié. Une étude rétrospective rapporte que 151/456 (33 %) cas d’anémie accompagnaient une néoplasie, 130 (28 %) une condition inflammatoire et 35 (7,7 %) une « infection » au sens large [1]. Al...

La borréliose de Lyme est une maladie potentiellement grave transmise en France par les tiques Ixodes ricinus. Le risque d’exposition aux agents responsables de la maladie est donc étroitement lié au risque d’exposition au vecteur I. ricinus. L’incidence de la maladie est mal connue et pourrait être sous-estimée. A ce jour et à l’échelle nationale,...

We aimed to (1) evaluate how frequently the uterus and ovaries of healthy, non-pregnant queens are visible; (2) describe their appearance; (3) take their measurements; and (4) determine intra- and inter-observer variabilities in their measurements. We hypothesised that, using a high-frequency linear probe, the uterus and ovaries could be ultrasonog...

Background Canine Monocytic Ehrlichiosis (CME), due to the bacterium Ehrlichia canis and transmitted by the brown dog tick Rhipicephalus sanguineus, is a major tick-borne disease in southern Europe. In this area, infections with other vector-borne pathogens (VBP) are also described and result in similar clinical expression. The aim of the present s...

Background Ticks are hematophageous arthropods that transmit a wide spectrum of pathogens to human and animals. The ability of an acaricidal product to kill ticks quickly provides an important added benefit, especially as protecting dogs from tick bites remains the best preventive measure against tick-borne diseases. The speed of kill of afoxolaner...

This study investigated the prediction of parturition in queens, as well as the effects of the queens' age and weight and the litter size on the accuracy of the prediction. A prospective study was performed in 24 purebred queens of 11 different breeds, all in normal body condition, using radiographic and ultrasonographic measurements of foetal femo...

Background: Domestic cats can be infested by a large range of parasite species. Parasitic infestations may cause very different clinical signs. Endoparasites and ectoparasites are rarely explored in the same study and therefore multiparasitism is poorly documented. The present survey aimed to improve knowledge of the prevalence and risk factors as...

Mathematical equations used for constructing the dynamic model of traditional live backyard chicken trade in Phitsanulok province, Thailand

In Southeast Asia, traditional poultry marketing chains have been threatened by epidemics caused by the highly pathogenic avian influenza H5N1 (HPAI H5N1) virus. In Thailand, the trade of live backyard chickens is based on the activities of traders buying chickens from villages and supplying urban markets with chicken meat. This study aims to quant...

Vector-borne diseases are medically important in humans and animals but were long considered tropical and known to first affect production animals. This is no longer true and we can see today that they are common in domestic animals and that they are also present in temperate countries, especially in Europe. In recent years, an increase in the diag...

In most social interactions, an animal has to determine whether the other animal belongs to its own species. This perception may be visual and may involve several cognitive processes such as discrimination and categorization. Perceptual categorization is likely to be involved in species characterized by a great phenotypic diversity. As a consequenc...

The incidence of catheter-associated urinary tract infections in cats catheterised for an obstructive lower urinary tract disease (LUTD) has not previously been evaluated. The objective of this study was to evaluate the frequency of significant bacteriuria in cats with obstructive LUTD managed for 48 h with a closed urine collection system. Eightee...