Abstract
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 rods, 14.0% were gram-negative rods, 17.1% were molds, 2.2% were actinomycetes, 1.2% were yeasts, and the remainder were assorted diphtheroids and coccobacillary types. The distribution of types varied according to hospital area, locations within a given area, and level of gross airborne contamination, but did not vary significantly with season of the year. There appeared to be some relationship between contaminant particle size and type of organism associated with the particle. Distribution of penicillin-resistant types differed markedly in different hospital areas, with proportions ranging from 21.4% in surgery areas to 4.3% in incinerator rooms. Of all gram-positive cocci isolated, 34.9% were hemolytic, and 16.4% were penicillin-resistant.
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- ANDERSEN A. A. New sampler for the collection, sizing, and enumeration of viable airborne particles. J Bacteriol. 1958 Nov;76(5):471–484. doi: 10.1128/jb.76.5.471-484.1958. [DOI] [PMC free article] [PubMed] [Google Scholar]
- ENGLEY F. B., Jr, BASS J. A. The comparative antibiotic resistance of airborne Microorganisms isolated from hospital areas. Antibiot Annu. 1956:634–639. [PubMed] [Google Scholar]
- FREDETTE V. The bacteriological efficiency of air-conditioning systems in operating-rooms. Can J Surg. 1958 Apr;1(3):226–229. [PubMed] [Google Scholar]
- GREENE V. W., VESLEY D., BOND R. G., MICHAELSEN G. S. Microbiological contamination of hospital air. I. Quantitative studies. Appl Microbiol. 1962 Nov;10:561–566. doi: 10.1128/am.10.6.561-566.1962. [DOI] [PMC free article] [PubMed] [Google Scholar]
- HARDYMENT A. F., WILSON R. A., COCKROFT W., JOHNSON B. Observations on the bacteriology and epidemiology of nursery infections. I. Staphylococcal skin infections. Pediatrics. 1960 May;25(Suppl):907–927. [PubMed] [Google Scholar]
- HIRCH A., LIDWELL O. M., WILLIAMS R. E. The bacterial flora of the air of occupied rooms. J Hyg (Lond) 1956 Dec;54(4):512–523. doi: 10.1017/s002217240004479x. [DOI] [PMC free article] [PubMed] [Google Scholar]