[Isolation and enumeration of bacteriophages against S. TYPHI, E. coli, and Shigella in the streams of Ankara].

Active bacteriophages were detected agains S. typhi Vi4, E. coli 36 and Shigella YGR in the streams of Ankara, during 27.3.1973 and 19.3.1974. 49 samples were collected from 3 chosen places. Bacteriophages in high concentrations were detected against S. typhi Vi4, E. coli 36 and Shigella Y6R even in 0.0001 ml amounts of these water samples. Besides bacteriophages, salmonella and shigella were detected as well. These studies showed that the streams in Ankara were highly contaminated with bacteria, and that the detergents and other chemicals used for cleaning in houses, which eventually mixed into the streams through sewage, did not have any bactericidal effect on bacteriophages or other pathogen organisms found in these streams.