Assessment of microbiological indoor air quality in an Italian office building equipped with an HVAC system

Bonetta, Silvia; Mosso, Stewart John; Sampò, S.; Carraro, Elisabetta

doi:10.1007/s10661-009-0761-8

Cited by 109 publications

(80 citation statements)

References 31 publications

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“…The quality of indoor air can be affected by various factors, such as inappropriate selection of indoor materials or heating, ventilation, and air conditioning (HVAC) systems (based on their excessive CO 2 concentrations). This can provide a hospitable environment for growing airborne bacteria and fungi, and subsequently, results in increasing the possibility for respiratory diseases, namely asthma (Bonetta et al 2010). Poor quality of indoor air can directly influence the residents' health and their performances (Pegas et al 2011).…”

Section: Sbs Contributors Symptoms and Effectsmentioning

confidence: 99%

Sick building syndrome: are we doing enough?

AlWaer

Omrany

Ghaffarianhoseini

et al. 2018

Architectural Science Review

172

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Health and well-being are vitally important aspects of people centric building design and are the roots of productivity. Sick building syndrome (SBS) is a collection of factors that can negatively affect physical health in several ways. Besides physical health is also related to psychological well-being because the human body is one interactive biological system. This paper focuses on reviewing the current state of knowledge on building sickness syndrome which has been prevalent as a building illness since the 1970s especially in offices and schools. While the concepts of intelligent, smart and sustainable buildings have gained considerable attention during recent decades, there is now increasing attention being given to designing healthy buildings. This study provides a review about SBS symptoms. Several negative effects of SBS are identified and potential solutions are advocated. Finally, the study stresses the role of built environment and concludes that ongoing research towards tackling SBS and developing healthy indoor environments should not be limited to a single formula as any health-related building design approach is dependent on several interacting factors. ARTICLE HISTORY

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Section: Sbs Contributors Symptoms and Effectsmentioning

confidence: 99%

Sick building syndrome: are we doing enough?

AlWaer

Omrany

Ghaffarianhoseini

et al. 2018

Architectural Science Review

172

View full text Add to dashboard Cite

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“…In this study, among the bacterial genera, Bacillus, Micrococcus and Staphylococcus were most abundant and among the fungal genera, Aspergillus and Penicillium were most abundant. Brandal et al (2014) reported that Bacillus and Staphylococcus are the most frequent in airborne microflora whereas Bonetta et al (2010) found Staphylococcus and Micrococcus as the most common bacterial genera in indoor air.…”

Section: Fig 1 Map Showing Outdoor (Od) and Indoor (Id) Sample Collmentioning

confidence: 99%

Microbiological pollutants in air and antibiotic resistance profile of some bacterial isolates

Kabir

Mridha

Islam

et al. 2016

Jahangirnagar Univ. J. Biol. Sci.

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Microbiological quality assessment is one of the most important investigations to determine the pollution of indoor and outdoor air. To evaluate the microbial load in air, samples were collected from 3 different outdoor and 3 different indoor sites within Jahangirnagar University campus. In outdoor air, bacterial and fungal counts varied from 117 -7284 CFU/m 3 and 88 -5287 CFU/m 3 , respectively. On the other hand, in indoor air bacterial and fungal counts varied from 440 -6226 CFU/m 3 and 88 -5874 CFU/m 3 , respectively. Furthermore, to reveal the antibiotic resistance profile, Staphylococcus aureus isolates were subjected to antibiogram study against 14 antibiotics. Among the isolates, 87.5% exhibited resistance to ceftazidime; 50% to penicillin G; 31.25 % to cefotaxime; 25 % to ceftriaxone, cefuroxime, cloxacillin; and 18.75% to amoxicillin. None of the isolates showed resistance to amikacin, ciprofloxacin, erythromycin, gentamicin, imipenem, nitrofurantoin and vancomycin. The presence of antibiotic-resistant bacteria in air may cause serious health hazard to the people living in this area.

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“…2,3 The culturable fraction of indoor microorganisms has been relatively welldocumented. [4][5][6] However, the majority of publications have focused on molds and their spores, and there is comparatively little information on bacteria in the indoor climate. The bacteria most often found in indoor environments such as schools and nurseries are grampositive genera such as Micrococcus and Staphylococcus.…”

Section: Introductionmentioning

confidence: 99%

The bacterial composition of ventilation filter dust in Norwegian pre-school nurseries

Nygaard

Charnock

2017

Indoor and Built Environment

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Abstract:The microbial content of dust collected from intake and exhaust air filters in six Norwegian nurseries was determined using 16S rRNA pyrosequencing and plate count analyses. The concentration of endotoxins was also estimated. About 96% of the sequences were classified as Actinobacteria, Proteobacteria, Firmicutes, Bacteroidetes, and Cyanobacteria. At the genus level, about 30% of sequences from the exhaust filter were classified as bacteria of probable human origin, such as Streptococcus and Corynebacterium species. These were close to absent in intake dust samples (<1%). This suggests that occupancy shapes the indoor microbiota, creating an environment relatively rich in genera of potential health significance. There were significantly greater counts of culturable bacteria in exhaust samples, indicating that passage of air through the nursery causes deterioration in the general air quality. Although there was significantly more endotoxin in exhaust dust, the endotoxin levels per colony forming unit were similar in both samples. The present study is the first of its kind in Norwegian nurseries, and is important as it reveals which groups of microorganisms nursery occupants are exposed to. In addition to possible direct health issues, the nature of our early exposure to microbes may be significant in the development of immunological conditions. AbstractThe microbial content of dust collected from intake and exhaust air filters in six Norwegian nurseries was determined using 16S rRNA pyrosequencing and plate count analyses. The concentration of endotoxins was also estimated. About 96% of the sequences were classified as Actinobacteria, Proteobacteria, Firmicutes, Bacteroidetes, and Cyanobacteria. At the genus level, about 30% of sequences from the exhaust filter were classified as bacteria of probable human origin, such as Streptococcus and Corynebacterium species. These were close to absent in intake dust samples (<1%). This suggests that occupancy shapes the indoor microbiota, creating an environment relatively rich in genera of potential health significance. There were significantly greater counts of culturable bacteria in exhaust samples, indicating that passage of air through the nursery causes deterioration in the general air quality. Although there was significantly more endotoxin in exhaust dust, the endotoxin levels per colony forming unit were similar in both samples. The present study is the first of its kind in Norwegian nurseries, and is important as it reveals which groups of microorganisms nursery occupants are exposed to. In addition to possible direct health issues, the nature of our early exposure to microbes may be significant in the development of immunological conditions.

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Assessment of microbiological indoor air quality in an Italian office building equipped with an HVAC system

Cited by 109 publications

References 31 publications

Sick building syndrome: are we doing enough?

Sick building syndrome: are we doing enough?

Microbiological pollutants in air and antibiotic resistance profile of some bacterial isolates

The bacterial composition of ventilation filter dust in Norwegian pre-school nurseries

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