Local health officials say Chicago has reached a “high risk” level of the West Nile virus because mosquitoes are testing ...

The Massachusetts Department of Public Health raised the risk level for West Nile Virus to high in many communities, urging ...

The risk level for West Nile virus in Boston has been raised to high, the Boston Public Health Commission said Wednesday.

A wild bird in Wawa recently tested positive for West Nile virus (WNv). WNv has been identified in birds, mosquitoes, horses and humans in Ontario since the summer of 2001. This result indicates the ...