Ohio Vectorborne Disease Surveillance Update

The Ohio Department of Health (ODH) Zoonotic Disease Program, in partnership with ODH Laboratory, local public health partners and sanitary district partners, collects and tests mosquitoes and ticks from many communities in Ohio as part of statewide vectorborne disease surveillance.  This surveillance also includes monitoring for human and veterinary cases as well.

Collections of mosquitoes are identified and tested at ODH Laboratory, while ticks are identified by ODH entomologists.  Results from mosquito and tick identification and testing are shared with our partners who use the information to guide public health interventions.

We will monitor for mosquito infections and tick findings throughout the summer and fall and will report positive results and summary statistics on this website, updated each Friday at noon.  Please download the attached document for a more detailed summary of mosquito and tick surveillance in Ohio.

2019 Numbers At-A-Glance

As of July 3, 2019

West Nile virus

Infographic: West Nile virus surveillance statistics

La Crosse/Unspecified California encephalitis virus

Infographic: La Crosse/unspecified California encephalitis virus surveillance statistics

Travel-associated mosquito-borne diseases

Infographic: Travel-associated mosquito-borne disease surveillance statistics

* Ohioans traveling to areas where local transmission is occurring should be aware of the ongoing situation and make every effort to avoid mosquito bites.  Additional information can be found from the Centers for Disease Control and Prevention (CDC)’s Travelers’ Health and Pan-American Health Organization websites.

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