[Salmonellosis in Poland in 2004].

In 2004, 15958 salmonellosis cases were reported (16617 in previous year), the incidence rate was 41,8 per 100 000 population. Seventy-one percent of patients were hospitalized, however the hospitalization ratio was higher for extraintestinal manifestations - 89%. As in previous years the seasonal peak was observed between June and August. The most frequently isolated type remained Salmonella Enteritidis--above 87% of cases. Only four other serotypes (Typhimurium, Hadar, Virchow and Infantis) were detected in all regions (voivodeship) of Poland. The age, gender, and urban/rural distributions of salmonellosis cases are similar to previous years. Children aged 2 are the mostly affected age group (incidence 421, 8 per 100 000 population). Extraintestinal manifestations of salmonellosis (septicemia, meningitis, pneumonia peritonitis and others) were observed in 140 patients (the highest number since 1994).