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HERDIN Record #: PCHRD17021914423053 Submitted: 19 February 2017 Modified: 03 March 2017

Risk factors for human helminthiases in rural Philippines.

Shu-Kay  Ng,
Veronica Tallo,
Yuesheng  Li,
Delia Chy,
Donald A. Harn,
Donald  P. McManus,
Remigio M. Olveda,
Allen G. Ross

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BACKGROUND: A cross-sectional survey was performed in 2012 among 18 rural barangays in Northern Samar, the Philippines in order to determine the prevalence of single and multiple species helminth infections and the underlying risk factors of acquiring one or more parasites.
METHODS: A total of 6976 participants who completed a medical questionnaire and provided a stool sample for examination were included in the final analysis.
RESULTS:The overall prevalence rates of Schistosoma japonicum, Ascaris lumbricoides, Trichuris trichiura, and hookworm were found to be moderate to high at 28.9%, 36.5%, 61.8%, and 28.4%, respectively. However, the prevalence of harbouring any of the helminths was found to be higher at 75.6%. Significant variation was evident among the predicted barangay-specific random effects for infection with S. japonicum (barangay variance of 0.66, 95% confidence interval 0.31-1.40) and for any helminth infection (barangay variance of 0.63, 95% confidence interval 0.30-1.29). The predictive models showed, with greater than 80% sensitivity and specificity, that low socio-economic status, low levels of education, poor sanitation, proximity to water sources, occupation (i.e., farming and fishing), and male sex were all reliable indicators of infection status.
CONCLUSION:This study will aid in the targeting of limited resources for national treatment and WASH (water, sanitation, and hygiene) efforts in low- and middle-income countries.

Publication Type
Publication Sub Type
Journal Article, Original
International Journal of Infectious Diseases
Publication Date
January 2017
Not Applicable
LocationLocation CodeAvailable FormatAvailability
U.S. National Library of Medicine: PubMed/Medline Abstract External Link (View)


1. Mass drug administration and the sustainable control of schistosomiasis: An evaluation of treatment compliance in the rural Philippines.
2. Co-parasitism of intestinal protozoa and Schistosoma japonicum in a rural community in the Philippines.

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