Worst Year Ever West Nile Virus infection in USA and its Prevention

What is West Nile virus?



West Nile virus (WNV) is a potentially serious illness. Experts believe WNV is established as a seasonal epidemic in North America that flares up in the summer and continues into the fall. This fact sheet contains important information that can help you recognize and prevent West Nile virus.



 It is a flavivirus which is common in the Middle East, West Asia and