WNV, along with Eastern Equine Encephalitis (EEE), are arboviruses that are transmitted from the bite of an infected mosquito. WNV was first identified in New Hampshire in August of 2000. The Public Health Lab has tested 3,048 mosquito batches, two animals, and 46 people so far this season for WNV and EEE. There have been no positive tests for EEE yet this year.
Residents and visitors to New Hampshire should protect themselves and their family members by using an effective mosquito repellant that contains 30% DEET, wearing long sleeves and pants at dawn and dusk when mosquitoes are most active, and removing standing water from around your home so mosquitoes do not have a place to breed. Repellents with picaridin, IR3535 and some oil of lemon eucalyptus and para-menthane-diol products also provide protection against mosquito bites.
Symptoms of the WNV usually appear within a week after being bitten by an infected mosquito, although many people can be infected and not develop any symptoms, or only develop very mild symptoms. Symptoms can include flu-like illness including fever, muscle aches, headaches, and fatigue. A very small percentage of individuals infected with WNV can go on to develop more serious central nervous system disease, including meningitis or encephalitis. If you or someone you know is experiencing flu-like symptoms, including fever and headache, contact your local medical provider.
Anyone with questions about WNV/EEE can call 1-866-273-6453 between 8 AM to 4:30 PM, Monday through Friday. More information about prevention can be found HERE.