[Variation in phage typing and pyocin typing of Pseudomonas aeruginosa].

The most frequently used microbiological methods in detecting hospital infection reservoirs caused by bacterial species Pseudomonas aeruginosa (P. a.) are serotyping, phagotyping and pyocin typing. Isolated were 86 strains of P. a. from various material of 38 patients hospitalized in University Clinical Centre in Ljubljana during 1986-7. Efforts have been made to find out the variability of results obtained by phago- and pyocin typing of successively isolated P.a. strains from the same patient. Changes found in these samples have been significant.