Soil-Transmitted Helminthiasis in Laos: A Community-Wide Cross-Sectional Study of Humans and Dogs in a Mass Drug Administration Environment

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書誌事項

公開日
2012-04-01
DOI
  • 10.4269/ajtmh.2012.11-0413
公開者
American Society of Tropical Medicine and Hygiene

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説明

<jats:p>We conducted a community cross-sectional survey of soil-transmitted helminthiasis in humans and dogs in four provinces in northern Laos. We collected and tested human and dog fecal samples and analyzed results against sociodemographic data. The prevalence of <jats:italic>Ascaris lumbricoides</jats:italic>, <jats:italic>Trichuris trichiura</jats:italic>, hookworm, and <jats:italic>Strongyloides stercoralis</jats:italic> was 26.1% (95% confidence interval [CI] = 23.7–28.4%), 41.5% (95% CI = 38.8–44.1%), 46.3% (95% CI = 43.3–49.0%), and 8.9% (95% CI = 7.4–10.4%), respectively. We observed strong heterogeneity for helminthiasis by ethnicity, province, and wealth status, which coincided with a risk profile demonstrating that Mon-Khmer persons and the poorest households are highly vulnerable. <jats:italic>Necator americanus</jats:italic> was the dominant hookworm species infecting humans and <jats:italic>Ancylostoma ceylanicum</jats:italic> was the only <jats:italic>Ancylostoma</jats:italic> species detected. Hookworm prevalence in village dogs was 94%, and the dominant species was <jats:italic>A. ceylanicum</jats:italic>. <jats:italic>Necator americanus</jats:italic> was also detected in dogs. It appears that dogs have a role in human hookworm transmission and warrant further investigation.</jats:p>

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