A5004163918- Viral Infections and Vectors
- Mosquito-borne diseases and control
- Yersinia bacterium, plague, ectoparasites research
- Vector-borne infectious diseases
- Bat Biology and Ecology Studies
- Bartonella species infections research
- Rabies epidemiology and control
- Zoonotic diseases and public health
- Malaria Research and Control
- Dermatological diseases and infestations
- Vector-Borne Animal Diseases
- Dengue and Mosquito Control Research
- Genetic diversity and population structure
- Insect and Pesticide Research
- Wildlife Ecology and Conservation
- Global Maternal and Child Health
- Species Distribution and Climate Change
- COVID-19 epidemiological studies
- Insect symbiosis and bacterial influences
- Forensic and Genetic Research
- Nematode management and characterization studies
- Parasitic Diseases Research and Treatment
- Plant Gene Expression Analysis
- Global Health Care Issues
- Bird parasitology and diseases
University of Ottawa
2018-2025
Université de Montréal
2023
Kingston Health Sciences Centre
2020
Western University
2016-2018
Virginia Commonwealth University
2016
Colorado State University
2016
University of Wyoming
2016
University of Göttingen
2016
Centre d'Écologie Fonctionnelle et Évolutive
2016
Centre National de la Recherche Scientifique
2016
Abstract Wolbachia bacteria, vertically transmitted intracellular endosymbionts, are associated with two major host taxa in which they show strikingly different symbiotic modes. In some of filarial nematodes, where strictly obligately beneficial to the host, complete within- and among-species prevalence as well co-phylogeny their hosts. arthropods, usually parasitic; if effects occurs, can be facultative or obligate, related reproduction. varies within among taxa, no co-speciation events...
Predicting the geographic spread of wildlife epidemics requires knowledge about movement patterns disease hosts or vectors. The field landscape genetics provides valuable approaches to study dispersal indirectly, which in turn may be used understand spread. Here, we applied genetic analyses and spatially explicit models identify potential path raccoon rabies a mesocarnivore community. We relatedness estimates derived from microsatellite genotypes raccoons striped skunks investigate their...
Lyme disease is an emerging vector-borne zoonotic of increasing public health importance in Canada. As part its mandate, the Canadian Disease Research Network (CLyDRN) launched a pan-Canadian sentinel surveillance initiative, Sentinel (CaLSeN), 2019.To create standardized, national network providing real-time portrait evolving environmental risk each province.A multicriteria decision analysis (MCDA) approach was used selection regions. Within region, systematic drag sampling protocol...
The blacklegged tick, Ixodes scapularis, is established in several regions of Ontario, Canada, and continues to spread into new geographic areas across the province at a rapid rate. This poses significant public health risk since I. scapularis transmits Lyme disease-causing bacterium, Borrelia burgdorferi, other pathogens potential concern. objective this study was develop species distribution models for B. burgdorferi predict compare distributions tick vector disease pathogen as well...
Canadians face an emerging threat of Lyme disease due to the northward expansion tick vector, Ixodes scapularis. We evaluated degree I. scapularis population establishment and Borrelia burgdorferi occurrence in city Ottawa, Ontario, Canada from 2017-2019 using active surveillance at 28 sites. used a field indicator tool developed by Clow et al. determine risk for each cohort site results drag sampling. Based on obtained with tool, we assigned ecological classification describing pattern...
Abstract Background To reduce malaria burden in Côte d'Ivoire, the Ministry of Health aims for 90% its population to possess one long-lasting insecticidal net (LLIN) every two persons by 2025. This study evaluated LLIN coverage years after a mass distribution central d'Ivoire. Methods A census was conducted 43 villages. Data were collected on household geo-position, composition, number sleeping units and LLINs owned. assessed using: 1/ownership; proportion with at least LLIN; 2/household...
In eastern North America, including Canada, Lyme disease is caused by Borrelia burgdorferi sensu stricto and transmitted to humans the blacklegged tick, Ixodes scapularis. The last decade has seen a growing incidence of in following northward range expansion I. scapularis tick populations from endemic areas United States. This may be attributable movement many hosts that they parasitize, songbirds, deer small mammals. this study, we wanted test effect spatial, temporal ecological variables,...
Population genomic analysis can be an important tool in understanding local adaptation. Identification of potential adaptive loci such analyses is usually based on the survey a large dataset combination with environmental variables. Phenotypic data are less commonly incorporated into studies, although combining genome scan phenotypic trait greatly improve insights obtained from each individually. Here, we aimed to identify potentially involved adaptation climate 283 Loblolly pine (Pinus...
Dengue, Zika and chikungunya are arboviruses of significant public health importance that transmitted by Aedes aegypti albopictus mosquitoes. In Colombia, where dengue is hyperendemic, were introduced in the last decade, more than half population lives areas at risk. The objective this study was to characterize spp. vectors their natural infection with dengue, Ibagué, a Colombian city capital department Tolima, case reports simultaneous circulation these three arboviruses. Mosquito...
Evolutionary histories of parasite and host populations are intimately linked such that their spatial genetic structures may be correlated. While these processes have been relatively well studied in specialist parasites hosts, less is known about the ecological evolutionary consequences relationships between generalist ectoparasites hosts. The aim this study was to investigate structure demographic history a bat ectoparasite, Cimex adjunctus, whose affinity weak but biology potential hosts...
Abstract Background The global impact of Zika virus in Latin America has drawn renewed attention to circulating mosquito-borne viruses this region, such as dengue and chikungunya. Our objective was assess socio-ecological factors associated with Aedes mosquito vector density a measure arbovirus transmission risk three cities potentially recent introduction: Ibagué, Colombia; Manta, Ecuador; Posadas, Argentina, order inform disease mitigation strategies. Methods We sampled populations total...
The environmental risk of Lyme disease, defined by the density Ixodes scapularis ticks and their prevalence Borrelia burgdorferi infection, is increasing across Ottawa, Ontario region, making this a unique location to explore factors associated with along residential-woodland gradient. In study, we collected I. trapped Peromyscus spp. mice, tested both for tick-borne pathogens, monitored intensity foraging activity deer in residential, woodland, interface zones four neighbourhoods. We...
Evaluating the permeability of potential barriers to movement, dispersal and gene exchanges can help describe spreading patterns wildlife diseases. Here, we used landscape genetics methods assess genetic structure striped skunk (Mephitis mephitis), which is a frequent vector rabies, lethal zoonosis great concern for public health. Our main objective was identify elements shaping this species in Southern Québec, Canada, an area where raccoon rabies variant has been detected. We hypothesised...
Background: The incidence of Lyme disease has increased in many regions Canada recent years, including Ottawa, Ontario.To date there been limited active tick surveillance the region.Objectives: To estimate both distribution and density Ixodes scapularis ticks city infection rates with Borrelia burgdorferi (that causes disease) other tick-borne pathogens.Methods: Between June October 2017, was conducted by drag sampling at 23 sites Ottawa municipal parks, recreational trails...
Recent studies have highlighted the occurrence and distribution of Ixodes scapularis ticks infected with Borrelia burgdorferi sensu stricto (s.s.) around city Ottawa, Ontario, Canada, need for strategies to mitigate risk human exposure infection. We conducted a field study from July October 2018 examine effectiveness ecotonal woodchip borders as an environmental control method suppress density host-seeking along recreational trails in Ottawa. used experimental design ten 100-m trail...
Abstract Identification of landscape features that correlate with genetic structure permits understanding factors may influence gene flow in a species. Comparing effects the on parasite and host provides potential insights into parasite‐host ecology. We compared fine‐scale spatial between big brown bats ( Eptesicus fuscus ) their cimicid ectoparasite Cimex adjunctus ; class Insecta) lower Great Lakes region United States, an area about 160,000 km 2 . genotyped 142 bat 55 C. samples at eight...
Abstract Background Analysis of disaggregated national data suggest uneven access to essential maternal healthcare services within countries. This is concern as it hinders equitable progress in health outcomes. Mounting an effective response requires identification subnational areas that may be lagging behind. paper aims explore spatial variation service use at centre catchment, village and household levels. Spatial correlations with wealth women’s education levels were also assessed....
Reciprocal selective pressures can drive coevolutionary changes in parasites and hosts, result that are highly specialized to their hosts. Selection host co-adaptation better understood endoparasites than ectoparasites, whose life cycles may be more loosely linked of Blood-feeding ectoparasites use salivary proteins prevent haemostasis the host, maximize energy intake. Here we looked for signals selection protein genes ectoparasite species from a single genus ( Cimex ) associate with range...
Human infection by West Nile virus (WNV; family Flaviviridae), in some cases, develops into a deadly neuroinvasive disease. WNV risk is thought to be influenced factors affecting the density of species that promote replication and transmission virus, namely peridomestic bird mosquito species. Factors influencing contact between infected mosquitoes vulnerable human populations may also important determining an area. Several urban form demographic factors, such as population proportion aged...
West Nile virus (WNV) is a mosquito-borne pathogen associated with uncommon but severe neurological complications in humans, especially among the elderly and immune-compromised. In Northeastern North America, Culex pipiens/restuans complex Aedes vexans are two principal vector mosquito species/species groups of WNV. Using 10-year surveillance dataset WNV captures at 118 sites across an area 40,000 km
Subdivided populations can be described by different models of population structure that reflect organization, dynamics, and connectivity. We used genetic data to investigate in two geographically sympatric, congeneric species generalist ectoparasites warm-blooded animals. characterized the spatial eastern bat bug (Cimex adjunctus Barber, 1939), an understudied fairly abundant species, using microsatellite markers at a scale representing contemporary dispersal species. found seven clusters,...
Rabies is a lethal zoonosis present in most parts of the world which can be transmitted to humans through bite from an infected mammalian reservoir host. The Arctic rabies virus variant (ARVV) persists mainly populations foxes ( Vulpes lagopus ), and lesser extent red fox vulpes ). Red are thought responsible for sporadic southward movement waves ARVV outside enzootic area northern Canada. In this study, we wanted investigate whether displayed notable levels genetic structure across...