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Appl Environ Microbiol. 1971 April; 21(4): 647-652
Copyright © 1971 American Society for Microbiology. All Rights Reserved.

Potentially Infectious Agents Associated with Shearling Bedpads: Effect of Laundering with Detergent-Disinfectant Combinations on Staphylococcus aureus and Pseudomonas aeruginosa

Cell Biology Division, Southern Research Institute, Birmingham, Alabama 35205

ABSTRACT

Glutaraldehyde-tanned woolskins which are used as bedpads to prevent decubitus ulcers were contaminated with Staphylococcus aureus (ATCC 6538) and Pseudomonas aeruginosa (ATCC 15442). Two methods of exposure, direct contact and aerosol, were used in separate experiments. Attempts were made to decrease the bacterial population placed on the woolskins by laundering them in a quaternary ammonium disinfectant, a phenolic disinfectant, or alkalinized glutaraldehyde, in combination with an anionic or nonionic detergent. The effect of a commercial detergent-sanitizer was also studied. Bacterial populations were significantly reduced in all experiments, but only laundering in glutaraldehyde in combination with either detergent resulted in maximum removal of bacteria. Viable bacteria were usually not detected in the rinse water (<1 viable organism/5 ml of rinse water).

¹ Eastern Utilization Research and Development Division, Agricultural Research Service, U.S. Department of Agriculture, Philadelphia, Pa. 19118.