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Travel-Associated Illnesses Spread by Mosquitoes

Travel-associated illnesses spread by mosquitoes are illnesses that people can get while traveling outside of Wisconsin and often outside of the U.S. Some travel-associated illnesses spread by mosquitoes include chikungunya virus, dengue virus, Zika virus, malaria, yellow fever, and Japanese encephalitis virus.

Not all mosquito bites will make you sick, but it is still important to take steps to protect yourself and your family while traveling to regions where these and other illnesses exist. Travel-associated illnesses spread by mosquitoes are preventable. Please visit the CDC (Centers for Disease Control and Prevention) Travelers' Health page for more information on how to protect yourself from mosquito bites while traveling.

Chikungunya Virus

Asian Tiger Mosquito on stalk

Chikungunya virus is transmitted in certain countries in Africa, Asia, Europe, the Indian and Pacific Oceans, the Caribbean, and the Americas. 

Dengue Virus

Adult and child enjoying a tropical beach view from a parapet

Mosquitoes that spread dengue can be found in tropical and subtropical regions. Dengue is preventable.



Passenger plane in flight over clouds

Mosquitoes that spread malaria can be found in tropical and subtropical regions.

Yellow Fever

Tourists at Iguazu Falls on the border of Brazil and Argentina

Yellow fever virus is spread in tropical and subtropical areas of Africa and South America.


Zika Virus

A silhouette of a mosquito about to bite against golden background

Zika virus is spread to people primarily through the bite of an infected mosquito, but can also be transmitted through sexual interaction or from mother to child. Zika virus infection during pregnancy can cause birth defects.

Questions about illnesses spread by mosquitoes? Contact us!
Phone: 608-267-9003 | Fax: 608-261-4976

Last revised December 18, 2023