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Ohio Vectorborne Disease Surveillance Update
ODH staff conducting mosquito surveillance

ODH staff set up traps to collect mosquitoes for surveillance.

The Ohio Department of Health (ODH) Zoonotic Disease Program, in partnership with ODH Laboratory, local public health partners and sanitary district partners, conducts statewide vectorborne disease surveillance which includes monitoring for human and veterinary cases.

We will monitor for diseases transmitted by mosquitoes and ticks 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.

2021 Numbers-At-A-Glance

As of July 15, 2021

2021 Mosquito-borne diseases

West Nile virus

Infographic: 2021 West Nile virus surveillance in Ohio

La Crosse/Unspecified California encephalitis virus

Infographic: 2021 La Crosse/Unspecified California virus surveillance in Ohio

Travel-associated mosquito-borne diseases

Infographic: 2021 Travel-associated mosquito-borne disease surveillance in Ohio

* 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.

2021 Tickborne diseases

Lyme disease, anaplasmosis, babesiosis

Infographic: 2021 Lyme disease, anaplasmosis and babesiosis surveillance in Ohio

Rocky Mountain spotted fever

Infographic: 2021 Rocky Mountain spotted fever surveillance in Ohio

Ehrlichiosis

Infographic: 2021 Ehrlichiosis surveillance in Ohio

2020 Numbers At-A-Glance

As of June 3, 2021

2020 Mosquito-borne diseases

West Nile virus

Infographic: 2020 West Nile virus surveillance in Ohio

La Crosse/Unspecified California encephalitis virus

Infographic: 2020 La Crosse/Unspecified California virus surveillance in Ohio

Travel-associated mosquito-borne diseases

Infographic: 2020 Travel-associated mosquito-borne disease surveillance in Ohio

* 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.

2020 Tickborne diseases

Lyme disease, anaplasmosis, babesiosis

Infographic: 2020 Lyme disease, anaplasmosis and babesiosis surveillance in Ohio

Rocky Mountain spotted fever

Infographic: 2020 Rocky Mountain spotted fever surveillance in Ohio

Ehrlichiosis

Infographic: 2020 Ehrlichiosis surveillance in Ohio