Potential vectors of equine arboviruses in the UK.
Abstract: There is growing concern about the increasing risk of disease outbreaks caused by arthropod-borne viruses (arboviruses) in both human beings and animals. There are several mosquito-borne viral diseases that cause varying levels of morbidity and mortality in horses and that can have substantial welfare and economic ramifications. While none has been recorded in the UK, vector species for some of these viruses are present, suggesting that UK equines may be at risk. The authors undertook, therefore, the first study of mosquito species on equine premises in the UK. Mosquito magnet traps and red-box traps were used to sample adults, and larvae were collected from water sources such as tyres, buckets, ditches and pools. Several species that are known to be capable of transmitting important equine infectious arboviruses were trapped. The most abundant, with a maximum catch of 173 in 72 hours, was Ochlerotatus detritus, a competent vector of some flaviviruses; the highest densities were found near saltmarsh habitats. The most widespread species, recorded at >75 per cent of sites, was Culiseta annulata. This study demonstrates that potential mosquito vectors of arboviruses, including those known to be capable of infecting horses, are present and may be abundant on equine premises in the UK.
British Veterinary Association.
Publication Date: 2016-09-30 PubMed ID: 27694545PubMed Central: PMC5284472DOI: 10.1136/vr.103825Google Scholar: Lookup
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Summary
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The research article discusses a study conducted to investigate the presence of mosquito species, capable of transmitting arboviruses, in horse properties in the UK. This study arises from concerns regarding potential horse disease outbreaks as some species of arbovirus-carrying mosquitoes are already found in the UK.
Introduction
- Firstly, the authors express growing concerns about the increasing risk of disease outbreaks caused by arboviruses in both humans and animals. They particularly highlight that several mosquito-borne viral diseases can lead to significant levels of morbidity and mortality in horses.
- Despite these diseases not being recorded in the UK, certain vector species for these viruses are present which suggests that UK equines may be at significant risk.
Methodology
- To conduct this research, the study utilised mosquito magnet traps and red-box traps for adult sampling and larvae were gathered from various water sources like tyres, buckets, ditches and pools.
- This is the first study of its kind on equine premises in the UK, making it potentially significant in proactive disease prevention measures.
Findings
- Among the several mosquito species trapped, many were found to be capable of transmitting important equine infectious arboviruses.
- The most commonly found species was Ochlerotatus detritus, which can carry some forms of flaviviruses. A maximum catch of 173 was recorded in a 72-hour span, particularly in areas closer to saltmarsh habitats.
- The most widely spread species, Culiseta annulata, was recorded at over 75% of the sites, marking a significant presence.
Conclusion
- The study concludes that potential mosquito vectors that could transmit arboviruses, including diseases known to infect horses, are present and even abundant in equine premises in the UK.
- This discovery has major implications for disease prevention measures and the protection of horse health.
Cite This Article
APA
Chapman GE, Archer D, Torr S, Solomon T, Baylis M.
(2016).
Potential vectors of equine arboviruses in the UK.
Vet Rec, 180(1), 19.
https://doi.org/10.1136/vr.103825 Publication
Researcher Affiliations
- Epidemiology and Population Health, Institute of Global Health, University of Liverpool, Liverpool, UK.
- Epidemiology and Population Health, Institute of Global Health, University of Liverpool, Liverpool, UK.
- Vector Biology, Liverpool School of Tropical Medicine, Liverpool, UK.
- Clinical Infection, Microbiology and Immunology, Institute of Global Health, University of Liverpool, Liverpool, UK.
- Epidemiology and Population Health, Institute of Global Health, University of Liverpool, Liverpool, UK.
MeSH Terms
- Animals
- Arbovirus Infections / epidemiology
- Arbovirus Infections / transmission
- Arbovirus Infections / veterinary
- Arboviruses
- Culicidae / virology
- Disease Outbreaks / veterinary
- Ecosystem
- Flavivirus
- Horse Diseases / epidemiology
- Horse Diseases / transmission
- Horse Diseases / virology
- Horses
- Insect Vectors / virology
- Risk
- United Kingdom / epidemiology
Grant Funding
- IS-HPU-1112-10117 / Department of Health
- RP-PG-0108-10048 / Department of Health
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