[The role of swimming pools in the spread of intestinal infections].

A kindergarten swimming bath was experimentally infested with M-17 Bacillus coli. It was found that after bathing 10% of children showed Escherichia M-17 in the feces. It is concluded that presence of conditionally pathogenic microorganisms in the water of swimming baths may be considered a qualitative and quantitative criterion of epidemic risk during bathing in infected basins in case hygienic norms are not observed per person.