Occurrence of anti-Toxoplasma gondii antibodies in female cattle in south-west of Iran

Department of Pathobiology, Faculty of Veterinary Medicine, Shahid Chamran University, Ahvaz, Iran.
Tropical Animal Health and Production (Impact Factor: 0.82). 12/2009; 42(5):899-903. DOI: 10.1007/s11250-009-9505-6
Source: PubMed


Toxoplasmosis, caused by Toxoplasma gondii, is a significant disease in livestock and humans. In Iran, studies shows that T. gondii infection in humans is relatively high and prevalence is associated mainly with consumption of undercooked meat or meat products. We have examined 450 serum samples from female cattle distributed over all Ahvaz, the center of Khouzestan province, south-west of Iran. IgG antibodies to T. gondii were assayed by the modified agglutination test using whole tachyzoites of T. gondii, and found in 71 (15.77%) of 450 cattle with titers of 1:25 in 38, 1:50 in 18, 1:100 in 11, 1:200 in three and 1:400 in one. Titers of antibodies were decreased in cattle over 2 years old. These results indicate that T. gondii infection in cattle of Khouzestan is relatively considerable, but not very high and consumption of beef may be a source of infection for humans in south-west of Iran.

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    • "It seems that different susceptibility to T. gondii infection in different animal species is important in consequent infections. A study in Mazandaran Province (north of Iran) found no T. gondii seropositivity in cattle (18), but Hamidinejat showed that 15.7% of cattle were seropositive in south-west of Iran by MAT (19). "
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    ABSTRACT: During the period from December 2008 to September 2009, we examined 254 serum samples (164 in hot-dry weather and 90 in cold-dry weather) from dromedary camels distributed all over Yazd Province, in the center of Iran. IgG antibodies were assayed by the modified agglutination test (MAT) and Neospora agglutination test (NAT) using whole tachyzoites of Toxoplasma gondii and Neospora caninum, incorporating 2-mercaptoethanol, for T. gondii and N. caninum, respectively. Anti-T. gondii antibodies were found in 37 (14.56%) of 254 camels with titers of 1:20 in 7, 1:40 in 6, 1:80 in 8, 1:160 in 1, 1:200 in 4, 1:400 in 6, 1:800 in 4, and 1:1600 in 1 camel. Out of 254 (3.94%) camel sera, 10 had antibodies to N. caninum with titers of 1:20 in 6 and 1:40 in 4 camels. There was no difference between the presence of antibodies for both parasites in male and female camels or in different weather conditions, but occurrence of anti-T. gondii antibodies was greater in older camels.
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