[Yersiniosis in Poland in 2006].

This is the first annual epidemiological report on yersiniosis in Poland. In our country yersiniosis has been reported since 2003. The total number of 140 yersiniosis cases were reported in 2006 in Poland. The incidence rate was 0.37 per 100,000 population. In this year 111 cases of enteric yersiniosis and 29 cases of extra intestinal yersiniosis were notified. The most frequent clinical manifestation of extraintestinal yersiniosis was joints inflammatory. No death and outbreak were reported. About seventy percent of patients were hospitalized. The serotype was determined for 43 isolated strains of Yersinia enterocolitica. Most of them was serotype O3 Yersinia enterocoolitica--39 cases. The most important finding was the occurrence of cases caused by serotype O8 Yersinia enterocolitica in our country.