SynthesisZoonoses and public health2026
Worldwide Seroprevalence and Risk Factors of Toxoplasma gondii Exposure Among Students: A Systematic Review and Meta-Analysis.
Synthesis in Zoonoses and public health, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundToxoplasma gondii, a zoonotic protozoan parasite, affects approximately one-third of the global population and is associated with congenital and neurological complications. While seroprevalence has been extensively studied in high-risk groups such as pregnant women, data on students, a population spanning childhood to young adulthood, are fragmented. We aimed to systematically assess the global seroprevalence and risk factors of T. gondii exposure among students to inform public health strategies for this demographic.
methodsWe conducted a systematic review and meta-analysis following PRISMA guidelines, with the protocol submitted to PROSPERO (CRD42025637197). We searched PubMed, Scopus and Web of Science from database inception to January 2025 for cross-sectional and observational studies reporting T. gondii seroprevalence in students (primary, secondary, undergraduate or postgraduate) using serological methods, with no language restrictions. Random-effects models were used to estimate pooled seroprevalence and risk factors, with heterogeneity assessed via I
resultsFrom 50 studies involving 32,054 students across 24 countries, the pooled global seroprevalence of T. gondii was 14.0% (95% CI 11.7-16.6; I
conclusionsHealth education programs in schools, promoting hand hygiene, safe food practices and responsible pet care, could reduce T. gondii exposure among students, particularly in high-prevalence regions. Further research is needed to explore the cognitive and behavioural impacts of infection in this population and to better characterize regional sources of heterogeneity.
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