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Study of the Indoor Air Quality in Hospitals in South Chennai, India — Microbial ProfileCentre for Environmental Studies, College of Engineering, Anna University, Guindy, Chennai, Tamil Nadu, 600025, India, suchisanam{at}gmail.com
Department of Microbiology, Sri Ramachandra Medical College & Research Institute, Sri Ramachandra University, Porur, Chennai, Tamil Nadu, 600116, India
Centre for Environmental Studies, College of Engineering, Anna University, Guindy, Chennai, Tamil Nadu, 600025, India
Department of Environmental Health Engineering, Sri Ramachandra Medical College & Research Institute, Sri Ramachandra University, Porur, Chennai, Tamil Nadu, 600116, India A 3-month pilot study (February—April 2006) was conducted to determine the quality of indoor air in hospitals in the Tamil Nadu region of India and to characterize the predominant aerobic bacteria and fungi present. The main objectives were (1) to sample the indoor air of three different hospitals in Chennai for bioaerosols to generate baseline data using the Petri plate gravitational settling (passive) method of sampling; and (2) to isolate and identify potentially pathogenic organisms prevalent in the hospital environment. Indoor air samples were collected from various wards at the different hospitals and processed for the identification of various predominant bacteria and fungi. The overall counts of Gram-positive organisms were found to be higher than Gram-negative organisms. Of these isolates, Staphylococci and Micrococci were the predominant Gram-positive bacteria, while Klebsiella sp. and Pseudomonas sp. were the predominant potentially pathogenic Gram-negative bacteria isolated. Among yeasts and molds, Aspergillus niger and A. flavus were commonly isolated.
Key Words: Bioaerosols Nosocomial infections Air sampling Settle plate Ventilation
Indoor and Built Environment, Vol. 17, No. 5,
435-441 (2008) |
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