An Excessive Heat Warning is in effect on July 30, 2014 for La Paz, Maricopa, Pinal, and Yuma Counties until July 31, 2014 8 PM. Learn more about how to stay safe in extreme heat and stay informed about future heat alerts.

Vector-Borne and Zoonotic Diseases Program

Chagas Disease

Chagas disease is caused by the parasite Trypanosoma cruzi, which is transmitted to animals and people by insect vectors that are found only in the Americas (mainly, in rural areas of Latin America where poverty is widespread). The insect vectors are called triatomine bugs (also called kissing bugs or conenose bugs). Chagas disease is also referred to as American trypanosomiasis.

Triatoma sanguisuga
Triatoma sanguisuga which is found from Pennsylvania to Florida and across the south to California.
Photo by Jim Gathany
Trypanosoma cruzi
Trypanosoma cruzi parasites in hindgut of a field-collected triatomine bugs.
Photo courtesy of the CDC

Chagas Disease Transmission Cycle
Chagas Disease Transmission Cycle

Chagas Disease Resources

CDC webpage on Chagas Disease

CDC MMWR article on screening of blood supply for Chagas Disease

Executive Order making Chagas Disease reportable in ArizonaPDF

Chagas Disease Case Investigation FormPDF