DERRY, N.H. (AP) — Public health officials say a horse from Derry is the first animal to test positive for eastern equine encephalitis in New Hampshire this year.
Authorities also have confirmed the virus in mosquitoes in Sandown. Those findings, along with a mosquito batch that tested for West Nile virus in Hampstead, have prompted officials to increase the risk level in Derry to "high" and the risk level in surrounding towns to "moderate."
So far this season, 10 mosquito batches have tested positive for West Nile virus and 13 have tested positive for EEE. One person in Chesterfield also has been diagnosed with West Nile virus.
Public health director Dr. Jose Montero says people should protect against mosquito bites no matter where they live until there is a killing frost statewide.