Abstract

Toxoplasma gondii is an obligate intracellular protozoan parasite that infects humans and animals. T. gondii surface antigen 1 (SAG1) is an appropriate antigen with high specificity and sensitivity for the detection of T. gondii infection in humans and animal hosts. The aim of this study was to determine the seroprevalence of T. gondii infection using SAG1 antigen (P30) in ownership dogs in Meshkin-Shahr district in the northwestern Iran. The sera samples were collected from 171 domestic dogs and tested using indirect ELISA (SAG1 antigen). The data were analyzed using SPSS software version 13. From a total of 171 dogs, 82 (48%) of them were sero-positive. No statistical significant difference was seen between T. gondii infection and gender (P=0.995). The highest sero-prevalence of rate was observed in>5years animals; but no statistical significant difference was seen between T. gondii infection and age (P=0.589). Our findings indicate that Toxoplasma seropositivity rate is high in ownership dogs in northwest of Iran. This is probably due to high exposure to contaminated food, soil, or water sources with sporulated Toxoplasma oocysts.

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