Enhanced West Nile virus surveillance in the North Kent marshes, UK

Particle and Fibre Toxicology

Jolyon M Medlock⁵  Steve Leach⁶  Anthony R Fooks¹  Nicholas Johnson³  Simon Springate⁸  Daniel L Horton⁷  Claire L Jeffries⁴  Fiona McCracken³  Robert A Cheke⁸  Luis M Hernandez-Triana³  Gabriella Gibson⁸  Alexander GC Vaux² 

[1] Institute of Infection and Global Health, University of Liverpool, Liverpool L69 7BE, UK;Medical Entomology group, MRA, Emergency Response Department, Public Health England, Porton Down, Salisbury SP4 0JG, UK;Animal and Plant Health Agency, Wildlife Zoonoses and Vector-Borne Diseases Research Group, Woodham Lane, Addlestone KT15 3NB, Surrey, UK;Current address: Department of Disease Control, London School of Hygiene and Tropical Medicine, Keppel Street, London WC1E 7HT, UK;NIHR Health Protections Research Unit in Emerging and Zoonotic Infections, Porton Down, UK;Microbial Risk Assessment and Behavioural Science, Emergency Response Department, Public Health England, Porton Down, Salisbury SP4 0JG, UK;School of Veterinary Medicine, University of Surrey, Guildford, UK;Natural Resources Institute, University of Greenwich at Medway Central Avenue, Chatham Maritime, Kent ME4 4TB, UK

关键词: Surveillance;    Mosquito;    Culicidae;    Usutu virus;    West Nile virus;    United Kingdom;    Culex modestus;   

Others  :  1146942
DOI  :  10.1186/s13071-015-0705-9

 received in 2014-10-31, accepted in 2015-01-29,  发布年份 2015

【 摘 要 】

Background

As part of efforts to more fully understand the potential risks posed by West Nile virus (WNV) and Usutu virus (USUV) in the UK, and following on from previous reports of a potential bridge vector Culex modestus for these viruses, at wetland sites in North Kent, mosquito surveillance was undertaken more widely across the Isle of Sheppey, the Hoo Peninsula and the Kent mainland.

Methods

Larval surveys were conducted and Mosquito Magnet® adult traps were used to collect adult mosquitoes. Pools of female mosquitoes were tested for the presence of WNV using real-time reverse transcriptase polymerase chain reaction. A subset of samples was tested for USUV.

Results

Culex modestus was found in both the pre-imaginal and imago stage at all five locations surveyed, accounting for 90% of adult mosquitoes collected. WNV or USUV were not detected in any sample.

Conclusions

Although no mosquitoes have been shown to be virus positive, the field survey data from this study demonstrated the dominance of an important bridge vector species for WNV in this region. Its wide geographical distribution highlights the need to update risk assessments on WNV introduction, and to maintain vigilance for WNV in the South East of England.

【 授权许可】

   
2015 Vaux et al.; licensee BioMed Central

【 图 表 】

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