Anaplasma marginale fertőzés szeroprevalenciája és a fertőzés esélye hazai nagy létszámú tejelő tehenészetben

Abstract

SUMMARY Anaplasma marginale is endemic in tropical and subtropical regions around the world. The aim of the serological survey study was to assess the apparent seroprevalence in a large scale dairy cattle herd infected with A. marginale in Hungary. The age, one of the risk factors, was analyzed in association with prevalence of antibodies against A. marginale in the herd. The antibodies against A. marginale were tested in indirect enzyme-linked immunosorbent assays. In the statistical analysis, Fisher's exact test was used to determine seroprevalence and the odds of infection. The apparent seroprevalence was 12% in the under 3 years old age group and was 49% in the 3 years old and older age group. The difference of seroprevalence was significant (p < 0.0001). The odds of infection compared the over 3 years old cattle than under 3 years old cattle 6.94-fold (OR = 6.94; 95% CI: 2.73—19.19).