Mapping Dengue Risk in Central Brazil
Author Information
Author(s): Siqueira-Junior João B, Maciel Ivan J, Barcellos Christovam, Souza Wayner V, Carvalho Marilia S, Nascimento Nazareth E, Oliveira Renato M, Morais-Neto Otaliba, Martelli Celina MT
Primary Institution: Institute of Tropical Pathology and Public Health, Federal University of Goias
Hypothesis
The study aims to identify potential high-risk intra-urban areas for dengue using household survey data.
Conclusion
The study found that areas previously considered low risk for dengue shifted to high risk within a year.
Supporting Evidence
- Dengue prevalence increased from 29.5% in 2001 to 37.3% in 2002.
- The study used a Generalized Additive Model to analyze spatial risk.
- Age and education level were associated with increased dengue infection risk.
Takeaway
The researchers looked at how dengue spread in a city and found that some areas that were safe last year became risky this year.
Methodology
Two household surveys were conducted in 2001 and 2002, testing for dengue antibodies in participants using a Generalized Additive Model.
Potential Biases
Potential bias due to reliance on self-reported data and the absence of entomological data.
Limitations
The study lacked household-specific data on mosquito density and had a low percentage of child participants.
Participant Demographics
Participants were asymptomatic individuals aged 5 years and older, with a similar distribution of age, gender, and education across both surveys.
Statistical Information
P-Value
< 0.001
Confidence Interval
[35.5–39.1]
Statistical Significance
p < 0.001
Digital Object Identifier (DOI)
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