Airborne fungi and bacteria in indoor and outdoor environment of the Pediatric Unit of Edirne Government Hospital

Abstract

This study was performed between January 2004 and December 2004 in 13 stations in the Pediatric Unit of Edirne Government Hospital in order to determine the outdoor and indoor airborne microfungal and bacterial contents. The results of air samplings revealed that 1,376 microfungal and 2,429 bacterial colonies in total were isolated. The isolated microfungal specimens were identified and 65 species from 16 genera were determined. Among these, the most frequent genus was Cladosporium with 462 colonies (33.58%) followed by Alternaria with 310 (22.53%) and Penicillium with 280 (20.35%) colonies. The isolated bacterial samples were grouped based on their Gram-staining properties. The most frequent ones were Gram (+) cocci with 1,527 colonies (62.87%) followed by Gram (+) bacilli with 828 colonies (34.09%) and Gram (-) bacilli with 74 colonies (3.05%). Staphylococcus, Bacillus, Corynebacterium, and Microccus appeared to be the common genera isolated for all months. Statistical analyses were performed in order to see if there existed a relationship between meteorological conditions and the microfungal and bacterial species and their concentrations.

Seasonal evaluation of bioaerosols from indoor air of residential apartments within the metropolitan area in South Korea

“…Staphylococcus is known to be the most common isolated genus in indoor air (Okten and Asan 2012). Among Staphylococcus, S. aureus has long been recognized as one of the most common human bacterial pathogens and causes of community-associated infections (Halablab et al 2010;Philip et al 2006).…”

Impacts of indoor surface finishes on bacterial viability

“…The morphologies of these strains combined accounted for 37.72% of total morphological diversity (Table and Table S3). Community selection based on morphological abundance, although it did not comprehensively capture the entire diversity of the indoor microbiome, did contain microorganisms that are often abundant indoors, such as Bacillus and Kocuria . At the genus level, the five isolates combined represented 21.24% of the diversity captured in 16S rRNA sequences of a subset of 436 isolates for which taxonomic assignments were available (Table and Figure S1).…”

Airborne Infectious Microorganisms ☆

“…Numerous Gram-positive bacteria are usually disseminated from the skin, oral and nasal surfaces, and hair of humans. This group is more frequently isolated from air samples than Gram-negative bacteria, with Staphylococcus being the most common genus of nonendospore-forming Gram-positive bacteria isolated in indoor air samples (Okten and Asan, 2012;Gilbert et al, 2010;Yu et al, 2015). The presence of these cells in the air increases the likelihood of nosocomial infections in healthcare settings.…”