Chlamydiaprevalence in Polish pig herds

Abstract

SUMMARYChlamydiae are frequently encountered intracellular Gram-negative bacteria. In pigs, these bacteria in combination with other pathogens contribute to the induction of a multi-aetiological syndrome. One of the major characteristics ofChlamydiaspp. is their ability to cause prolonged, often subclinical infections. While the economic consequences ofChlamydiaspp. infections in pig farms are not fully established, we know that reproductive disorders and other syndromes correlated withChlamydiainfection can lead to financial loss as a result of a reduction in pork production. Additionally,Chlamydiaspp. presents a potential zoonotic hazard, therefore determining the prevalence ofChlamydiain pig populations is critical. In the present study 97 pig herds from Poland were involved. To determine the prevalence ofChlamydiaPCR and CFT tests were used. In total 797 vaginal samples, 797 conjunctival samples, and 235 serum samples were collected and tested. The study took place from 2011 to 2014. We foundChlamydiaspp. present in 71·2% of all tested farms. The percentage of animals testing positive on any given farm varied from 20% to 100%.