This study was partially funded by research grant number 23981 from the Bill & Melinda Gates Foundation (23981) fund ongoing cysticercosis research by the authors. Lescano is sponsored by the training grant D43 TW007393 awarded by the Fogarty International Center of the U.S. National Institutes of Health.
The American Journal of Tropical Medicine and Hygiene
Tapeworms -- Control, Epidemiology -- Case studies
Hymenolepis nana, the dwarf tapeworm, is a common intestinal infection of children worldwide. We evaluated infection and risk factor data that were previously collected from 14,761 children aged 2-15 years during a large-scale program in northern Peru. We found that 1,124 of 14,761 children (7.61%) had H. nana infection, a likely underestimate given that only a single stool sample was examined by microscopy for diagnosis. The strongest association with infection was lack of adequate water (adjusted prevalence ratio [aPR] 2.22, 95% confidence interval [CI] 1.82-2.48) and sanitation infrastructure in the house (aPR 1.94, 95% CI 1.64-2.29). One quarter of those tested did not have a bathroom or latrine at home, which doubled their likelihood of infection. Similarly, one quarter did not have piped public water to the house, which also increased the likelihood of infection. Continued efforts to improve access to basic water and sanitation services will likely reduce the burden of infection in children for this and other intestinal infections.
Vilchez Barreto, P. M., Gamboa, R., Santivañez, S., O'Neal, S. E., Muro, C., Lescano, A. G., & ... For The Cysticercosis Working Group In Perú, C. (2017). Prevalence, Age Profile, and Associated Risk Factors for Hymenolepis nana Infection in a Large Population-Based Study in Northern Peru. The American Journal of Tropical Medicine And Hygiene, 97(2), 583-586.