Vector-borne Disease Data Dashboard

This dashboard uses interactive data visualizations to display vector-borne disease case data (counts and incidence rates), emergency department visits for tick-related illness, and vector-borne pathogen (germ) data in mosquitoes and ticks.

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Vector-borne Disease Surveillance Reports

The Department conducts routine testing of mosquito pools and other sources of vector-borne illness. The results are published weekly during the annual peak period for vector-borne illnesses.


West Nile Virus

Report within 24 hours of Diagnosis to the Local Health Department.

West Nile virus is an infection that is spread by the bite of an infected mosquito. Identified in the United States in 1999, West Nile virus is seen most often during the summer and early fall months. Anyone can get infected with West Nile virus. People over age 50 and people with weak immune systems are at greater risk of developing severe illness. Mild symptoms are flu-like and may include fever, headache, body aches and sometimes a rash. Severe symptoms can include high fever, stiff neck and swelling of the brain. There is no specific treatment for West Nile virus. The best way to prevent the disease is to avoid mosquito bites.


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Return to the main vector-borne illness page


Education Materials


Laboratory Testing and Guidance

Clinicians requesting West Nile virus testing should complete the Arboviral Testing Request worksheet and send via encrypted e-mail to


Ill or Dead Bird Reports

NJDOH no longer tests birds for WNV, but if you find an ill or dead bird on your property, you should report it to your county mosquito control agency who will use that information as a part of  WNV mosquito surveillance efforts and the NJDEP Division of Fish and Wildlife.

For reports of sick or dead domestic poultry, including gamebirds, backyard poultry and exhibition poultry, please contact New Jersey Department of Agriculture immediately at (609) 671-6400.

Last Reviewed: 11/20/2023