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Microbiological assessment of indoor air quality at different hospital sites

2015-09Journal article Restricted access
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dc.contributor.authorCabo Verde, Sandra
dc.contributor.authorAlmeida, Susana Marta
dc.contributor.authorMatos, João
dc.contributor.authorGuerreiro, Duarte
dc.contributor.authorMeneses, Márcia
dc.contributor.authorFaria, Tiago
dc.contributor.authorBotelho, Daniel
dc.contributor.authorSantos, Mateus dos
dc.contributor.authorViegas, Carla
dc.date.accessioned2016-08-25T11:08:57Z
dc.date.available2016-08-25T11:08:57Z
dc.date.issued2015-09
dc.description.abstractPoor hospital indoor air quality (IAQ) may lead to hospital-acquired infections, sick hospital syndrome and various occupational hazards. Air-control measures are crucial for reducing dissemination of airborne biological particles in hospitals. The objective of this study was to perform a survey of bioaerosol quality in different sites in a Portuguese Hospital, namely the operating theater (OT), the emergency service (ES) and the surgical ward (SW). Aerobic mesophilic bacterial counts (BCs) and fungal load (FL) were assessed by impaction directly onto tryptic soy agar and malt extract agar supplemented with antibiotic chloramphenicol (0.05%) plates, respectively using a MAS-100 air sampler. The ES revealed the highest airborne microbial concentrations (BC range 240-736 CFU/m(3) CFU/m(3); FL range 27-933 CFU/m(3)), exceeding, at several sampling sites, conformity criteria defined in national legislation [6]. Bacterial concentrations in the SW (BC range 99-495 CFU/m(3)) and the OT (BC range 12-170 CFU/m(3)) were under recommended criteria. While fungal levels were below 1 CFU/m(3) in the OT, in the SW (range 1-32 CFU/m(3)), there existed a site with fungal indoor concentrations higher than those detected outdoors. Airborne Gram-positive cocci were the most frequent phenotype (88%) detected from the measured bacterial population in all indoor environments. Staphylococcus (51%) and Micrococcus (37%) were dominant among the bacterial genera identified in the present study. Concerning indoor fungal characterization, the prevalent genera were Penicillium (41%) and Aspergillus (24%). Regular monitoring is essential for assessing air control efficiency and for detecting irregular introduction of airborne particles via clothing of visitors and medical staff or carriage by personal and medical materials. Furthermore, microbiological survey data should be used to clearly define specific air quality guidelines for controlled environments in hospital settings.pt_PT
dc.identifier.citationCabo-Verde S, Almeida SM, Matos J, Meneses M, Faria T, Viegas C, et al. Microbiological assessment of indoor air quality at different hospital sites. Res Microbiol. 2015;166(7):557-63.pt_PT
dc.identifier.doi10.1016/j.resmic.2015.03.004pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.21/6410
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relation.publisherversionhttp://www.sciencedirect.com/science/article/pii/S092325081500056Xpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/pt_PT
dc.subjectBacteria, Aerobicpt_PT
dc.subjectColony Count, Microbialpt_PT
dc.subjectFungipt_PT
dc.subjectPortugalpt_PT
dc.subjectAir microbiologypt_PT
dc.subjectAir pollution, Indoorpt_PT
dc.subjectHospitalpt_PT
dc.subjectAirborne microorganismspt_PT
dc.subjectIndoor air qualitypt_PT
dc.titleMicrobiological assessment of indoor air quality at different hospital sitespt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage563pt_PT
oaire.citation.issue7pt_PT
oaire.citation.startPage557pt_PT
oaire.citation.titleResearch in Microbiologypt_PT
oaire.citation.volume166pt_PT
person.familyNameViegas
person.givenNameCarla
person.identifier.ciencia-idEE1E-C639-D70F
person.identifier.orcid0000-0002-1545-6479
person.identifier.ridB-7217-2013
person.identifier.scopus-author-id55443609700
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationb5fa5da4-50c3-4b88-ae20-1bc63cb485f7
relation.isAuthorOfPublication.latestForDiscoveryb5fa5da4-50c3-4b88-ae20-1bc63cb485f7

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