G S Michaelsen

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Over 10,000 airborne microorganisms, isolated from various areas of two hospitals, were characterized according to colonial and microscopic morphology and certain physiological reactions, including penicillin resistance and hemolysis. On the basis of all isolates examined during a 15-month period, 42.6% were gram-positive cocci, 19.2% were gram-positive(More)
GREENE, V. W. (University of Minnesota, Minneapolis), D. VESLEY, R. G. BOND, AND G. S. MICHAELSEN. Microbiological contamination of hospital air. II. Qualitative studies. Appl. Microbiol. 10:567-571. 1962.-Over 10,000 airborne microorganisms, isolated from various areas of two hospitals, were characterized according to colonial and microscopic morphology(More)
The levels of airborne contamination in various areas of two hospitals were determined during a 15-month sampling period, using Casella and Andersen volumetric samplers. Based on nearly 5,000 samples, the mean count per ft(3) ranged from 4.5 in obstetric-gynecology delivery rooms to 72.4 in waste-handling areas. The mean count for the entire hospital(More)