Epidemiology of Toxoplasmosis in SERBIA: A Cross-Sectional Study on Blood Donors
Milena Stopić; Tijana Štajner; Ljiljana Marković-Denić; Vladimir Nikolić; Iva Djilas; Snežana Jovanović Srzentić; Olgica Djurković-Djaković; Branko Bobić
Toxoplasmosis is a globally distributed parasitic zoonosis, affecting approximately one third of the human population. Epidemiological studies on toxoplasmosis conducted in Serbia so far have been focused on women of childbearing age, without a clear insight into the prevalence in the general population. We conducted a cross-sectional study in a representative sample of the healthy adult population consisting of 1095 blood donors of both genders to establish the prevalence and risk factors for Toxoplasma gondii infection. Data on the demographic and clinical characteristics of all study participants, as well as on their lifestyle habits, were collected by means of a questionnaire. The overall prevalence of infection was 20.5% (224/1095) and the avidity of the specific IgG antibodies detected was high in a vast majority of the seropositive donors (98.2%). Interestingly, the remaining 1.8% of the specific IgG positive samples were of borderline avidity (4/224), in complete absence of specific IgM. The multivariate logistic regression analysis showed that independent risk factors included age (from OR (95% CI) 1.9 (1.13&ndash:3.28) in the 30&ndash:39 age group, to 6.8 (3.27&ndash:14.24) in the age group of >:60 years), suburban living (OR (95% CI) 2.2 (1.43&ndash:3.34)) and contact with soil (OR (95% CI) 1.4 (1.01&ndash:1.94)). This first large-scale study on toxoplasmosis in the general population in Serbia shows the lowest prevalence ever reported in this country. Moreover, the novel perspective on risk factors provides an updated basis for future prevention programs.
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