On 13 September 2024, the IHR NFP for Barbados notified WHO of one confirmed human infection with West Nile Virus (WNV) in a child. This marks the first detected human case of WNV reported from Barbados.
Additionally, no infections have been previously documented in birds or horses in this country, making this case both unusual and unexpected. However, the WNV has spread throughout the Caribbean, likely via infected migratory birds. It is possible that the virus is circulating in birds and horses undetected.
West Nile viruses belong to the flavivirus family and are transmitted by Culex mosquitoes. The main hosts are birds; humans are false hosts. Most cases are asymptomatic; clinically symptomatic cases develop fever and meningitis or encephalitis. Elderly persons, pregnant women and immunosuppressed persons are at higher risk for a neuroinvasive form of the disease.
The following precautions are recommended:
- Protect yourself against mosquito bites during the day and at night (see factsheet mosquito and tick bite protection).
- Do not touch sick or dead birds, as they may also be infected.
- If you have visited a West Nile fever transmission area, do not donate blood for at least 28 days after returning.