Serological and Pyocine Types of Pseudomonas aeruginosa from Various Sources

Abstract

Two hundred and sixty six strains of Pseudomonas aeyuginosa isolated from various pathological or non-pathological materials were classified by serological and pyocine typing methods for the purpose of epidemiological investigation. The O antigenic groups detected were Verder and Evans' O1, 2, 3 (7a, 7b), 4, 5, 6, 8, 9, 10 and Habs' O4 and O10. In addition, three new O antigenic groups d0esignated tentatively as Ox11, Ox12 and Ox13 have been established. Among these groups, Verder amid Evans' O2, O3 (7a, 7b) and Ox11 were most common. No significant difference existed between the O groups of P. aeruginosa isolated from pathological materials and those obtained from non-pathological sources. Pyocine typing of Darrell and Wahba was considered to be useful in the epidemiological investigation. In a patient, P. aeyuginosa of a specific sero-pyocine type persisted for long period in an infected focus.