Epidemiologic aspects of the malaria transmission cycle in an area of very low incidence in Brazil
2007

Malaria Transmission in Low Incidence Area of Brazil

Sample size: 1842 publication 15 minutes Evidence: moderate

Author Information

Author(s): Cerutti Crispim Junior, Boulos Marcos, Coutinho Arnídio F, Hatab Maria do Carmo LD, Falqueto Aloísio, Rezende Helder R, Duarte Ana Maria RC, Collins William, Malafronte Rosely S

Primary Institution: Federal University of Espírito Santo

Hypothesis

Is there an unrecognized reservoir for malaria in Espírito Santo, Brazil?

Conclusion

The study suggests the possibility of a simian reservoir for malaria due to low incidence and asymptomatic cases.

Supporting Evidence

  • 95% of patients were experiencing their first episode of malaria.
  • Asymptomatic residents showed positive results for malaria antibodies.
  • The majority of patients had low parasite counts.

Takeaway

This study looked at malaria in a place in Brazil where not many people get sick. They found that some people didn't show any symptoms but still had the malaria germs.

Methodology

The study surveyed 65 patients and 1,777 residents using blood tests and questionnaires over three years.

Potential Biases

Potential bias in self-reported travel history and forest exposure.

Limitations

The study may have information bias regarding travel and forest visits.

Participant Demographics

Most patients were males (78.5%), with an average age of 35.1 years, and many lived in rural areas.

Statistical Information

P-Value

0.042

Statistical Significance

p<0.05

Digital Object Identifier (DOI)

10.1186/1475-2875-6-33

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