Limitations of Deltamethrin for Controlling Chagas Disease Vectors in Ecuador
Author Information
Author(s): Grijalva Mario J, Villacís Anita G, Ocaña-Mayorga Sofía, Yumiseva César A, Baus Esteban G
Primary Institution: Tropical Disease Institute, Biomedical Sciences Department, College of Osteopathic Medicine, Ohio University
Hypothesis
Can selective deltamethrin spraying and community education effectively control Chagas disease vectors in rural Ecuador?
Conclusion
New vector control strategies need to be devised and evaluated for reduction of T. cruzi transmission in this region.
Supporting Evidence
- Triatomine infestation indices remained high during the study.
- 65% of triatomines were found infected with Trypanosoma cruzi.
- New infestations occurred in previously vector-free domestic units.
Takeaway
The study found that spraying insecticide and educating communities didn't work well to stop bugs that spread Chagas disease from coming back.
Methodology
The study involved examining domestic units for triatomine infestation over a year, with selective deltamethrin spraying and community education.
Potential Biases
Potential bias due to self-reported prior insecticide application and dropouts from the study.
Limitations
Loss of 78 domestic units that were not sampled three times due to various reasons, including refusal to participate.
Participant Demographics
Rural communities in the Manabí province of Ecuador.
Statistical Information
P-Value
p = 0.09
Digital Object Identifier (DOI)
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