Risk Factors for Helminth Co-Infection in Brazil
Author Information
Author(s): Pullan Rachel L., Bethony Jeffrey M., Geiger Stefan M., Cundill Bonnie, Correa-Oliveira Rodrigo, Quinnell Rupert J., Brooker Simon
Primary Institution: London School of Hygiene and Tropical Medicine
Hypothesis
What household and environmental factors influence the risk of helminth co-infection in a Brazilian community?
Conclusion
The study found that the risk of co-infection with Necator americanus and Schistosoma mansoni is influenced by socio-economic status and household crowding, but many factors remain unexplained.
Supporting Evidence
- 71.1% of individuals were infected with N. americanus and 50.3% with S. mansoni.
- 41.0% of individuals were co-infected with both helminths.
- Co-infection prevalence varied significantly across households.
Takeaway
In Brazil, many people can get sick from two types of worms at the same time, and where they live and how much money they have can make a difference.
Methodology
The study used cross-sectional surveys combining parasitological and socio-economic data with geographical information system analysis.
Potential Biases
Potential biases include reliance on self-reported socio-economic data and the exclusion of some households from analysis.
Limitations
The study could not account for all variability in co-infection risk, suggesting other factors may be involved.
Participant Demographics
Participants were residents of a rural community in southeastern Brazil, with a majority involved in subsistence farming.
Statistical Information
P-Value
p<0.001
Statistical Significance
p<0.001
Digital Object Identifier (DOI)
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