Anne Lichtenwalner, DVM, PhD, University of Maine Extension Question: What are the risks of WNV to humans, horses and pets in Maine this year? Answer: WNV is a disease that can be transmitted by some (but not all) species of mosquitoes here in the Northeast. Routine testing of mosquito “pools” has revealed WNV in Maine read more West Nile Virus (WNV) in Maine 2012: Frequently Asked Questions