Occurrence of Airborne Bacteria and Fungi in Bayside Offices in Rio de Janeiro, Brazil

Brickus, Leila S.R.; Siqueira, Luiz F.G.; Neto, Francisco Radler de Aquino; Cardoso, Jarí N.

doi:10.1177/1420326x9800700504

Cited by 11 publications

(12 citation statements)

References 15 publications

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“…In contrast, Brickus et al 25. found that the microbiological concentration in the indoor air was similar to the outdoor values, which means that the I/O concentration ratio was close to 1 25. However, by comparing obtained average values of I/O ratios with that proposed by Neto and Siqueira26 (I/O ≤ 1.5 = good; I/O = 1.5–2.0 = regular; I/O > 2 = poor indoor conditions), the indoor conditions among cases can be considered to be relatively poor when compared to a regular indoor conditions among controls.…”

Section: Discussionmentioning

confidence: 89%

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Indoor airborne microbial burden and risk of acute respiratory infections among children under five in Ibadan, Nigeria

Ana

Fakunle

Ogunjobi

2013

Indoor and Built Environment

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Acute respiratory infection is the fourth major cause of morbidity and mortality among under-five children globally. However, the profile of microbial burden that could contribute to these infections among under-five children in the indoor environments has not been extensively studied particularly in developing countries like Nigeria. This study was designed to determine the burden of airborne microbes in indoor environment that predispose under-five children to acute respiratory infections. A prospective case-control design was employed for this study. Two hundred and twenty under-five children each with acute respiratory infection (cases) and without acute respiratory infection (controls) were selected from children visiting Oni-memorial Children Hospital and University College Hospital, Ibadan. A follow-up of 66 consented cases and controls each was carried out to assess the burden of indoor airborne microbes using a non-volumetric method, and the total counts per cubic metre were compared with the American Industrial Hygiene Association guideline. Data were analysed using descriptive statistics, t-test and Spearman's rank correlation. Mean indoor total bacterial count for cases (9.6 Â 10 2 cfu/m 3 ) was significantly higher than the permissible limit recommended by the American Industrial Hygiene Association ( 500 cfu/m 3 ) as compared to controls (3.5 Â 10 2 cfu/m 3 ) (p < 0.05). Educating mothers of under-five children on improved ventilation, good housing and indoor sanitary practices to reduce indoor microbial load is therefore advocated.

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Section: Discussionmentioning

confidence: 89%

“…This is no doubt the consequence of inadequate ventilation increased the number of occupancy. In contrast, Brickus et al 25. found that the microbiological concentration in the indoor air was similar to the outdoor values, which means that the I/O concentration ratio was close to 1 25.…”

Section: Discussionmentioning

confidence: 89%

Indoor airborne microbial burden and risk of acute respiratory infections among children under five in Ibadan, Nigeria

Ana

Fakunle

Ogunjobi

2013

Indoor and Built Environment

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“…were commonly isolated from university rooms in Poland [51]. Micrococcus , Bacillus and Staphylococcus were isolated in a building in Brazil [67]. The CoNS, Micrococcus and Corynebacterium were found to be the predominant genera in different parts of a hospital and primary schools located in Edirne, Turkey and Staphyloccus species were the most prevalent bacteria in all sampled months [30,68].…”

Section: Resultsmentioning

confidence: 99%

Seasonal and Spatial Variations of Bioaerosols in Indoor Urban Environments, Ankara, Turkey

Menteşe

Rad

Arısoy

et al. 2011

Indoor and Built Environment

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Seasonal and spatial variations of both levels and characteristics of airborne bacteria and fungi in various types of non-complaint indoor environments and their outdoors were investigated. Bioaerosol samples were collected by the single-stage Andersen sampler during the winter and summer seasons in Ankara, Turkey. Indoor and outdoor temperature, relative humidity (RH) and CO 2 concentrations were also monitored online during the sampling. Bacteria levels in apartments were found to be considerably elevated when people were present. Significant relationships between bioaerosol levels and RH and CO 2 concentrations ( p50.05) were found. Bacteria levels exhibited a seasonal variation, while fungi levels did not, probably due to lower fungi concentrations occurrence as a result of lower RH values (median: 30%). Measured low levels of fungi in this study may be due to geographical conditions, climatic factors, and other environmental conditions. The indoor to outdoor (I/O) ratio for bacteria levels were found to be significantly higher than 1.0, while indoor and outdoor fungi levels were similar. Winter to summer (W/S) ratios in the sampling site groups varied on a large scale for both culturable fungi concentrations (0.24-19.59) and total bacteria count (0.16-6.59). The most prominent bacteria were Micrococcus spp., Staphylococcus spp. and Bacillus spp., while the most predominant fungi were Penicillium spp., Aspergillus spp. and Cladosporium spp.

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“…mycotoxins) play a major role in SBS. The fungal spores can constitute up to 70% of all bioaerosol pollution of indoor air (Brickus et al, 1998;Reynolds et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

Speleomycology of air in Demänovská Cave of Liberty (Slovakia) and new airborne species for fungal sites

Ogórek¹

2018

JCKS

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The study is the first report of the fungal air quality in the Demänovská Cave of Liberty, Slovakia, which is one of the most visited caves in Slovakia (Low Tatras). A total of 108 air samples were collected in June 2014 using the microbiological air sampler "Air Ideal 3P" and Potato Dextrose Agar medium. Fungi were identified based on phenotypic tests and ITS regions analysis. Air samples collected from underground sites contained fewer propagules of fungi (from 86.7 to 126.7 colony-forming units per m 3 of air) than outdoor air samples (391.7). Altogether, the incidence of 18 different fungal species were found in the air of the cave, and most of them were isolated from the indoor samples. Cladosporium macrocarpum spores dominated in this study. The fungal species such as Bjerkandera adusta, Exophiala xenobiotica, Fusarium lateritium, Penicillium aurantiacobrunneum, and Trichoderma citrinoviride were detected for the first time in the internal air of underground sites. Overall, fungal air quality of the Demänovská Cave does not pose a biological threat to people and animals with undamaged immune systems according to most standards of fungal sir contamination. However, some of the airborne fungi detected in the cave can pose a risk to persons and animals with weakened immune systems or people who have fungal allergies.

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Occurrence of Airborne Bacteria and Fungi in Bayside Offices in Rio de Janeiro, Brazil

Cited by 11 publications

References 15 publications

Indoor airborne microbial burden and risk of acute respiratory infections among children under five in Ibadan, Nigeria

Indoor airborne microbial burden and risk of acute respiratory infections among children under five in Ibadan, Nigeria

Seasonal and Spatial Variations of Bioaerosols in Indoor Urban Environments, Ankara, Turkey

Speleomycology of air in Demänovská Cave of Liberty (Slovakia) and new airborne species for fungal sites

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