An Increase in Hookworm Infection Temporally Associated With Ecologic Change
1997

Increase in Hookworm Infection Linked to Environmental Changes in Haiti

Sample size: 250 publication Evidence: moderate

Author Information

Author(s): Bruce Lilley, Patrick Lammie, Jennifer Dickerson, Mark Eberhard

Primary Institution: University of Alabama at Birmingham

Hypothesis

Changes in local environmental conditions have led to an increase in hookworm prevalence in Leogane, Haiti.

Conclusion

The study found a significant increase in hookworm infection prevalence due to environmental changes caused by deforestation and flooding.

Supporting Evidence

  • Hookworm prevalence increased from 0% to 12%-15% over a 6-year period.
  • Environmental changes included deforestation and flooding that altered local conditions.
  • Children were treated with mebendazole when infected with helminths.

Takeaway

In Haiti, when the environment changed because of deforestation and flooding, more people got sick from hookworms.

Methodology

Data were collected from a longitudinal study involving stool samples from children under 2 years of age in Leogane, Haiti.

Limitations

The study did not account for other potential environmental changes or interventions during the study period.

Participant Demographics

Children under 2 years of age from several neighborhoods in Leogane, Haiti.

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