Abstract
Regarding preparing and serving foods, food handlers have an influential role in the spreading of foodborne infections. Due to the great potential to cause foodborne infections, intestinal parasites (IPs) are considered a significant public health problem in today's societies. In Iran, despite several regional reports, national data on IPs prevalence in food handlers are lacking. The aim of the present study, therefore, is to estimate the pooled prevalence of IPs infections and associated pooled odds ratio of educational level among food handlers in Iran. PubMed, Web of Science, Scopus, Embase, and Google Scholar databases (international) and SID and Magiran databases (national) were systematically searched for studies that reporting the prevalence of IPs in food handlers in Iran, published between 2000 and 2020. Pooled prevalence was estimated using a random-effects model with a 95% confidence interval (CI) and depicted as a forest plot, while heterogeneity was evaluated using Cochran's Q-test. The overall pooled prevalence estimate for IPs was 19.3% (95% CI = 14.9–23.7%). Prevalence of the protozoan parasites (20%, 95% CI = 13.7–26.3%) was significantly higher than that of the helminthic parasites (1.6%, 95% CI = 1.1–2.0%). Giardia lamblia (5.2%), Entamoeba coli (5.0%), and Blastocystis spp. (4.4%), as protozoan parasites, and Ascaris lumbricoides (1.4%), Enterobius vermicularis (0.9%), and Hymenolepis nana (0.5%), as helminthic parasites, were the most commonly reported species. Food handlers with low educational levels were 20% more exposed to IPs infection, compared to those with high educational levels (OR = 1.21, 95% CI = 0.88 to 1.65). The prevalence of IPs infections among food handlers in Iran is significant. Besides taking into account this epidemiologic information, a holistic approach, including periodic stool screening, health education, and treatment of infected food handlers, will help in the control of these infections in Iran.
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