Chagas disease

noun

Cha·​gas disease ˈshä-gəs- How to pronounce Chagas disease (audio)
-gə-səz-
variants or Chagas' disease
: a tropical American disease that is caused by a trypanosome (Trypanosoma cruzi) transmitted chiefly by blood-sucking insects (genus Triatoma, Rhodnius, or Panstrongylus) and that occurs in both an acute and chronic form

Note: The acute form of Chagas disease lasts for several weeks to months and is marked by mild symptoms (such as fever, fatigue, or swelling at the infection site) or rarely by serious symptoms (such as myocarditis or meningoencephalitis) but is often asymptomatic. The acute form may sometimes progress years later to a chronic form characterized especially by cardiac and gastrointestinal complications (such as cardiomyopathy, irregular heart rhythm, and enlargement of the colon or esophagus).

Chagas disease kills more Latin Americans than any other parasitic illness.The Economist
Chagas' disease spreads via insect fecal contamination of its own bite.Phil Gunby

called also American trypanosomiasis

Examples of Chagas disease in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
In its early stages, Chagas disease can be cured with antiparasitic medications. Janet Loehrke, USA Today, 20 Sep. 2025 Chagas disease, caused by the parasite Trypanosoma cruzi, can present in two phases, according to the CDC. Evan Moore, Charlotte Observer, 17 Sep. 2025 Although kissing bugs have been identified in 32 states, Chagas disease has been considered nonendemic in the country, the CDC said. Jennifer Rodriguez, Miami Herald, 17 Sep. 2025 Additionally, if a family member has been diagnosed with Chagas disease, you should get tested. Greta Cross, Freep.com, 17 Sep. 2025 And the Texas Department of State Health Services reports that between 2013 and 2016, 91 cases of Chagas disease were reported. Ella Gonzales, Fort Worth Star-Telegram, 12 Sep. 2025 There are two antiparasitic drugs approved for the treatment of Chagas disease in the U.S. — Benznidazole and Lampit (nifurtimox). Melissa Rudy, FOXNews.com, 4 Sep. 2025 Another photo in this category (shown below) was made by researchers in Brazil who study the parasite that causes Chagas disease. Eva Amsen, Forbes.com, 19 June 2025 The lab that demonstrated bedbugs’ potential as vectors of Chagas disease got the idea from a paragraph-long description of a study from 1912, says Michael Levy, an epidemiology professor at the University of Pennsylvania who led the 2014 study. Kristen V. Brown, The Atlantic, 4 Dec. 2024

Word History

Etymology

Carlos Chagas †1934 Brazilian physician

First Known Use

1911, in the meaning defined above

Time Traveler
The first known use of Chagas disease was in 1911

Browse Nearby Words

Cite this Entry

“Chagas disease.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Chagas%20disease. Accessed 22 Sep. 2025.

Medical Definition

Chagas disease

noun
Cha·​gas disease ˈshäg-əs- How to pronounce Chagas disease (audio)
variants or Chagas' disease
ˈshäg-əs-(əz-)
: a tropical American disease that is caused by a parasitic protozoan of the genus Trypanosoma (T. cruzi) transmitted chiefly by blood-sucking reduviid insects (genus Triatoma, Rhodnius, or Panstrongylus) and that occurs in both an acute and chronic form

Note: The acute form of Chagas disease lasts for several weeks to months and is marked by mild symptoms (such as fever, fatigue, or swelling at the infection site) or rarely by serious symptoms (such as myocarditis or meningoencephalitis) but is often asymptomatic. The acute form may sometimes progress years later to a chronic form characterized especially by cardiac and gastrointestinal complications (such as cardiomyopathy, irregular heart rhythm, and enlargement of the colon or esophagus).

called also American trypanosomiasis

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