[Yersiniosis in Poland in 2009].

The total number of 326 yersiniosis cases were reported in 2009 in Poland. The incidence rate was 0.85 per 100 000 inhabitants. In this year 288 cases of intestinal yersiniosis and 38 cases of extraintensinal yersiniosis were notified. There were no deaths could be due to infection with Yersinia. About 76% of patients were hospitalized. The most common clinical symptoms of intestinal yersiniosis cases were diarrhea (86%), high temperature (79%), abdominal pain (42%) and vomiting (37%). The most common symptom of extraintensinal form of yersiniosis was discomfort on the part of the osteoarticular system, which occurred in 58% of patients. In 2009 there were no reported outbreaks ofyersiniosis. Serological types of Yersinia enterocolitica isolated in 128 cases. Half of them were Y enterocolitica serotype 03 but there were also 59 cases caused by Y enterocolitica serotype 08.