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Nosocomial Infection with Serratia marcescens: Comparison of Bacteriocin Types and Antibiograms between Two University Hospitals

Nosocomial distribution of Serratia marcescens at two university hospitals was studied 9 (12%) and 26 (12%); these four types amounted to 77% and 61% respectively. Types 4 and 9 which formed a high proportion of isolates at both hospitals were apparently the most common bacteriocin types. Using 154 strains of the bacteriocin types 4 , 9, 14, 26, 42 and 52 of S. marcescens, antibiogram with 13 antimicrobial agents was tested. The strains isolated from MCHO were found to be more resistant than those from NUH. The isolates of S. marcescens at each hospital showed characteristic , different distribution in bacteriocin type and antibiogram. The close relation was not always observed between antibiograms and bacteriocin types.