Fascioliasis and toxoplasmosis are the two important zoonotic diseases that are endemic in Iran and share some common transmission routes. The present study is aimed at determining the seroprevalence of human fascioliasis and toxoplasmosis in rural and urban areas of Jolfa County, Northwest Iran. In a cross-sectional study, 600 human sera were collected randomly from humans living in Jolfa County including three cities and 13 villages from 2017 to 2018. Anti-Toxoplasma IgG and anti-Fasciola sp. IgG tests have been performed using the enzyme-linked immunosorbent assay. Four (0.7%) out of 600 human sera showed positive levels of anti-Fasciola IgG. Three out of four seropositive humans were from an urban area, and one (25%) was from rural inhabitants. Considering T. gondii infection, 45% of studied human sera were seropositive for anti-T. gondii IgG. In conclusion, this is the first study reporting Fasciola seropositivity in the area. Based on the findings, human fascioliasis is present in the studied area, Northwest Iran, granted in low prevalence. Considering T. gondii seropositivity, the prevalence is high, yet close to the reports from other regions in the province.
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