Airborne microorganisms in a municipal solid waste recovery system

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Abstract
The types of bacteria and fungi present in the air of a municipal solid waste recovery system have been characterized and the population densities estimated. Conventional methods were successful in enumerating coagulase-positive staphylococci, Klebsiella spp., gram-negative bacteria, fungi, and common indicator organisms. Selective and enrichment media, however, did not yield Salmonella isolates. Salmonella and Shigella were recovered at a frequency of 3% or less on trypticase soy agar. A broad spectrum of bacteria and fungi were isolated. No evidence has been found that indicates that these organisms have produced adverse health effects.