Dengue Epidemic in Belem, Para, Brazil, 1996-97
Author Information
Author(s): Amelia P.A. Travassos da Rosa, Pedro F.C. Vasconcelos, Elizabeth S. Cruz, Sueli G. Rodrigues, Bernard Mondet, Ana C.R. Travassos da Rosa, Maria R. Sousa, Jorge F.S. Travassos da Rosa
Primary Institution: Instituto Evandro Chagas, Belem, Para, Brazil
Conclusion
The dengue epidemic in Belem was unusual due to a lag phase before extensive transmission began, but no hemorrhagic cases or deaths were reported.
Supporting Evidence
- 17,440 serum samples were positive for dengue by virus isolation or serologic testing.
- 43.5% of all sera collected were positive for dengue.
- 54.25% of positive samples were from female patients.
Takeaway
This study looked at dengue fever cases in Belem, Brazil, and found that many people got sick, but no one died from it.
Methodology
Serum samples were drawn from febrile patients and tested for dengue antibodies using MAC ELISA and hemagglutination-inhibition tests.
Potential Biases
The study may have bias due to the reliance on serologic testing and the specific population sampled.
Limitations
The study did not report any hemorrhagic cases or deaths despite the presence of DEN-2 virus.
Participant Demographics
49.8% of the patients were male, and the majority were residents of Belem and Ananindeua.
Statistical Information
P-Value
p < 0.0001
Statistical Significance
p < 0.0001
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