Factors associated with intestinal parasites in schoolchildren of municipal schools in Cambé

Abstract

Abstract: The aim of this work was to determine factors associated with the prevalence of intestinal parasites in schoolchildren in the municipality of Cambé, Paraná. A total of 1996 stool samples were collected between 2006 and 2009, using the methods of Hoffman, Pons and Janer, Faust and collaborators and the Kato-Katz. The prevalence was 23.2%. The parasites found were Entamoeba coli (10.4%); Endolimax nana (9.6%), Giardia lamblia (6.4%), Enterobius vermicularis (1.5%), Entamoeba histolytica/dispar (0.3%), Trichuris trichiura (0.4%), Iodamoeba butschlii, Hymenolepis nana and hookworm infection (0.2%) and Ascaris lumbricoides and Schistosoma mansoni (0.1%). We found no statistically significant gender differences. The age, family income, mother's education level, consumption of untreated water, absence of sewage collection and contact with freshwater streams were associated with the presence of intestinal parasites. Although the highest prevalence of protozoa is commensal this is worrying as it indicates that the fecal-oral transmission is present in this population and may increase the transmission of pathogenic forms, since they share the same transmission routes. The identified cases of schistosomiasis were not autochthonous, but early diagnosis of this infection was important to avoid contamination of the environment.