Intestinal parasitic infections (IPIs) are neglected diseases with limited data
regarding prevalence in Brazil and many other countries. In increasingly urban
societies, investigating the profile and socioenvironmental determinants of IPIs in
the general population of slum dwellers is necessary for establishing appropriate
public policies catered to these environments. This study assessed the
socioenvironmental conditions and prevalence of IPIs in slums of Rio de Janeiro, RJ
State, Brazil.MethodsA cross-sectional study covering an agglomeration of urban slums was conducted
between 2015 and 2016 using participants observation, a socioeconomic survey, and
the spontaneous sedimentation method with three slides per sample to analyze fresh
stool specimens ( n =595) searching for intestinal parasites.Results
Endolimax nana ( n =95, 16.0%) and
Entamoeba coli ( n =65, 10.9%) were the most
frequently identified agents, followed by Giardia intestinalis (
n =24, 4.0%) and Ascaris lumbricoides (
n =11, 1.8%). Coinfections caused by E. nana
and E. histolytica/dispar and by Entamoeba coli/A.
lumbricoides were significant. The use of piped water as drinking
water, the presence of A. lumbricoides , and contamination with
coliform bacteria and Escherichia coli were more common in major
area (MA) 1. Children (0-19 years) had a greater chance of living in poverty (OR
3.36; 95% CI: 2.50- 4.52; p <0.001) which was pervasive. The
predominance of protozoa parasites suggests that a one-size-fits-all approach
focusing on preventive chemotherapy for soil-transmitted helminths is not
appropriate for all communities in developing countries. It is important that both
residents and health professionals consider the socioenvironmental conditions of
urban slums when assessing intestinal parasitic infections for disease control and
health promotion initiatives.
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