[Contamination of the Czechoslovak section of the Danube by bacteria of the Salmonella group (author's transl)].

120 water samples taken during 1972 and 1973 from 8 profilen of the Danube as well as 15 samples taken from the Morava and the Váh rivers have been examined for salmonella contamination. Salmonellas were present in 60-93.3% of examined water samples taken along the whole Czechoslovak section of the Danube. The results point on the longterm survival of salmonellas and consequently their long-distance contribution by the Danube. We recovered altogether 769 salmonellas belonging to 11 serological groups and to 55 serotypes and lysotypes. The most frequent serotypes were S. enteritidis, typhimurium, agona, derby and panama.