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the claim

Chagas disease has been present in the southern United States for centuries as a natural zoonosis.

the verdict
SUPPORTED
the evidence backs this
Recorded sources
2 sources for · 0 against

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Is it true that Chagas disease has been present in the southern United States for centuries as a natural zoonosis?

Yes. Evidence from recent studies confirms that Chagas disease vectors and the parasite Trypanosoma cruzi are naturally established in wildlife and insect populations across the southern United States.

Verdict: SUPPORTED · 2 sources for, 0 against · Last checked

The analysis

The retrieved papers document native triatomine vectors and Trypanosoma cruzi infections across multiple southern US states (such as the American Southwest and Florida), supporting the claim that Chagas disease is present as a natural zoonosis in the region. None of the papers refute this.

Evidence for · 2
Using iNaturalist presence data to produce suitability maps for Triatoma protracta, T. rubida and T. recurva in the American Southwest, Texas and northern Mexico, to identify potential transmission zones of Chagas disease.
2024
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J, H., E, T., CL, C., Z, S., MM, W., RM, O., & LA, M. (2024). Using iNaturalist presence data to produce suitability maps for Triatoma protracta, T. rubida and T. recurva in the American Southwest, Texas and northern Mexico, to identify potential transmission zones of Chagas disease.. doi.org. https://doi.org/10.1038/s41598-024-76821-z

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More for · 1
Comprehensive study of <i>Trypanosoma cruzi</i> genetic diversity from Triatominae vectors in the Southern United States: Geographic structuring, mitochondrial introgression, and multiclonality
2026
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Hernandez-Valencia, J. C., Beatty, N. L., Vogel, K. J., Zima, J., & Nováková, E. (2026). Comprehensive study of
                  <i>Trypanosoma cruzi</i>
                  genetic diversity from Triatominae vectors in the Southern United States: Geographic structuring, mitochondrial introgression, and multiclonality. doi.org. https://doi.org/10.64898/2026.08.21.746190

What does the evidence say?

The retrieved papers document native triatomine vectors and Trypanosoma cruzi infections across multiple southern US states (such as the American Southwest and Florida), supporting the claim that Chagas disease is present as a natural zoonosis in the region. None of the papers refute this.

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