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Coagulase-negative staphylococci, identified as S. epidermidis, S. saprophyticus, S. haemolyticus, S. hominis, and S. warneri, were tested for susceptibility to a number of antimicrobial agents by disk agar diffusion and broth microdilution methods, S. warneri and S. saprophyticus were found to be the most susceptible, and S. haemolyticus and S. epidermidis were found to be the least susceptible. Differences in antimicrobial susceptibility patterns are discussed, along with their epidemiological and therapeutic implications.

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An unusual, slow growing, pink-pigmented gram-negative bacillus was isolated from bronchoscopy specimens of seven patients over a three-month period. The organism was identified as Methylobacter mesophilica. None of the patients were believed to be infected with Methylobacter mesophilica. The results of environmental cultures showed that the organism was present in tap water from the bronchoscopy room.