Westchester County

What is West Nile Virus?

To stope the spread of West Nile Virus, the County has started larviciding.

Aug. 15, 2014 -- Westchester County has learned of its first human case of West Nile Virus this year, which was confirmed today in a 71-year-old Larchmont resident who is hospitalized. The Health Department reminds residents to take precautions against mosquitoes. “This first case should serve as a reminder to residents to discard any standing water from their property and to use repellents if they spend time outdoors from dusk to dawn, when mosquitoes are most active,” said Sherlita Amler, MD, Commissioner of Health.

What is West Nile Virus?
West Nile Virus is a disease carried by mosquitoes. It can cause serious illness in humans and may even be fatal. People only get West Nile Virus when they’re bitten by a mosquito that has bitten an infected bird. To protect our community we are asking residents to help reduce the mosquito population.

Here are some things you can do:

  • Remove from around your home and neighborhood anything that might hold standing water. For example: old tires, buckets and wheelbarrows.
  • Report any standing water that you cannot remove by calling (914) 813-5000.
  • Protect yourself from mosquito bites. 

Dead birds
The United States Department of Agriculture and the Westchester County Health Department are no longer taking reports of dead birds or submitting birds for West Nile virus testing. Surveillance and control efforts regarding West Nile virus will be focused in the areas of adult mosquito surveillance, larval mosquito control and public education.

If you find a dead bird please dispose of it properly. To dispose of a dead bird use gloves and a double layer of plastic trash bags to pick up the bird. Using your gloved hands and a doubled trash bag, enclose the dead bird in the bags. Close and tie the bags and dispose in the trash or as directed by your municipality. Wash your hands with soap and warm water. West Nile virus is not transmissible via touching a dead bird. A person must be bitten by an infected mosquito for transmission to occur. If you have any questions please contact the Westchester County Health Department at (914) 813-5000.

Fight the Bite! Learn more about West Nile Virus (CDC)

West Nile Virus Positive Mosquito Batches 2014


Number of Positive
Mosquito Batches


New Rochelle 1 7/24/14
 Mt. Vernon 2 7/30/14
 Mt. Vernon  1  8/05/14
New Rochelle  1  8/05/14
Yonkers 1 8/29/14

Total # of positive
batches to date


West Nile Virus Data Brief
Control and Surveillance in Westchester County 

Insect repellent safety

Maps and charts of West Nile Virus activity

Protecting your animals from West Nile Virus

mosquitolifecycle235Life cycle of the mosquito
The mosquito goes through four distinct stages during its life cycle: egg, larva, pupa and adult. Learn more about the life cycle of the mosquito.

West Nile Virus Resources