Publication: Risk associations for intestinal parasites in symptomatic and asymptomatic schoolchildren in central Mozambique.
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2020-06-04
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Dashti, Alejandro ISCIII 
Muadica, Aly Salimo ISCIII
Köster, Pamela Carolina ISCIII
Bailo-Barroso, Begoña ISCIII
Hernandez-De-Mingo, Marta ISCIII
Dacal, Elena ISCIII
Saugar, Jose Maria ISCIII
Fuentes Corripio, Isabel ISCIII
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Wiley
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Abstract
Chronic infections by enteric parasites including protist and helminthic species produces long-term sequelae on the health status of infected children. This study assesses potential associations linked with enteric parasite infections in symptomatic and asymptomatic children in Zambézia province, Mozambique.
In this prospective cross-sectional study, stool samples and epidemiological questionnaires on demographics and risk associations were collected from symptomatic children (n = 286) from clinical settings and asymptomatic (n = 807) children from 17 schools and creches aged 3‒14 years. We detected enteric parasites by PCR-based methods. We calculated prevalence (adjusted for age, sex, house construction, drinking water, and latrine use) and odds ratios (OR) for risk associations with logistic regression, after adjusting for district, neighbourhood, and symptoms.
Numbers and adjusted prevalences (95% confidence intervals in brackets) for the symptomatic and asymptomatic populations were G. duodenalis 120, 52%(22-82), 339, 42% (25-59); followed by S. stercoralis 52, 14%(9‒20), 180, 20%(15-25). Risk associations for G. duodenalis included drinking untreated river/spring water, OR 2.91 (1.80-4.70); contact with ducks, OR 14.96 (2.93‒76.31); dogs, OR 1.92 (1.04-3.52); cats, OR 1.73 (1.16-2.59), and a relative with diarrhoea, OR 2.59 (1.54‒4.37). Risk associations for S. stercoralis included having no latrine, OR 2.41 (1.44-4.02); drinking well water, OR 1.82 (1.02-3.25), and increasing age, OR 1.11 (1.04-1.20).
We found a high prevalence of intestinal parasites regardless of the children's symptoms. Drinking well or river water, domestic animals, and latrine absence were contributing factors of human infections.
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Clin Microbiol Infect . 2020 Jun 4;S1198-743X(20)30308-6