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Appl Environ Microbiol. 1968 February; 16(2): 223-227
Copyright © 1968 American Society for Microbiology. All Rights Reserved.

Terminal Disinfection in Hospitals with Quaternary Ammonium Compounds by Use of a Spray-Fog Technique

Department of Microbiology, Albert Einstein Medical Center, Philadelphia, Pennsylvania 19141

ABSTRACT

Spray-fogging of hospital rooms with a quarternary ammonium disinfectant was found to be an effective means of reducing the number of detectable airborne and surface bacteria. The level of bacterial contamination in hospital rooms was determined before and after fogging by means of the gravitational fallout method, the petri dish swab technique, and volumetric air-sampling procedures. Rooms vacated by patients infected with staphylococci, streptococci, pseudomonads, and salmonellae were tested and found to be effectively decontaminated of most of the detectable organisms by the fogging procedure.