Comparison of Campylobacter jejuni genetic diversity in cattle farms

The present study was designed to determine prevalence and strain genetic diversity of Campylobacter jejuni in bovine. Samples were collected from three different farms and from different ages groups animals – calves, young cattle and cows. From 91 of C. jejuni positive samples, 49 isolates were genotyped by flaA PCR-RFLP. Our findings showed that in 49 isolates are 19 different genotypes. Also more then twice prevalence are finding in calves and young cattle, then in cows. But in older animals we found more various genotypes, then in youngs. Genotypes I and III were dominant with numbers of isolates. Three genotypes, III, VI and XVII were prevalent among all farms. Campylobacters, like most zoonosis pathogens can mirgate between hosts and because of this reason differentiate strains are difficult. So why knowledge about genetic prevalence, spread dinamic between cattle and inside of farms in different age groups animals are important for understanding these microorganisms ecology and for applying better controls methods. And most effective pattern of reducing humans infection are decrease prevalence of C. jejuni in cattle farms