EN
The 61,020 samples of swine serum and vaginal swabs were collected in 2007-2009. The sera were examined by complement fixation test (CFT). Positive results were found in 277 pigs. The percentage of positive serological results in subsequent years was: 0.4%, 0.47%, and 1.65%, respectively. The vaginal swabs (n=277) selected from pigs diagnosed as positive in the CFT were tested by PCR. Occurrence of Chlamydia suis was confirmed in PCR in 200 cases. Statistical analysis (χ² test, Person and Cramer correlation coefficient) demonstrated that both methods were coincident in the diagnosis of C. suis infection in swine.