Predominant phage types of coagulase positive staphylococci in hospital infections.

360 strains of Staphylococcus aureus isolated from various clinical specimens were subjected to bacteriophage typing. 247(68.6%) strains were typable. Among the typable strains 75(20.83%) belonged to phage group I, 45(12.5%) belonged to phage group III, 6(1.67%) belonged to phage group II and 14(3.89%) strains belonged to miscellaneous group. By far, the largest was the mixed group having 107(29.72%) strains. 113 strains (31.4%) were untypable. All the strains were tested for antibiotic sensitivity test. 287 (79.7%) were multiple drug resistant strains.