Demolition of a hospital building by controlled explosion: the impact on filamentous fungal load in internal and external air

Bouza, Emilio; Peláez, Teresa; Pérez‐Molina, José A.; Marín, María Teresa Martínez; Alcalá, Luís; Padilla, Belén; Muñoz, Patricia

doi:10.1053/jhin.2002.1316

Cited by 57 publications

(39 citation statements)

References 53 publications

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“…The same genera of fungi were recovered from both environments, suggesting an influence of external factors on internal contamination levels, as has been described in the literature. 2 There was also an increase in levels of Cladophialophora spp. in all internal collection points when compared to the previous months, and counts of this fungus were increased in the external environment.…”

Section: Discussionmentioning

confidence: 97%

Monitoramento de fungos anemófilos e de leveduras em unidade hospitalar

et al. 2005

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ObjectiveTo monitor and characterize airborne filamentous fungi and yeasts from abiotic and biotic sources within a hospital unit. Methods Collections were carried out on a monthly basis, at two different time periods, from the adult and pediatric intensive care units and surgical center of a hospital in Araraquara, Southeastern Brazil. Collection of airborne fungi was carried out using a simple-stage Andersen sample. The presence of yeasts was investigated in samples taken from the hands and oropharynx of staff members as well as from the surface of beds and doorknobs inside the critical areas. Results Thirty-two genera of airborne fungi and were recovered from the surgical center and 31 from the intensive care units. Genera most frequently isolated were Cladophialophora spp., Fusarium spp., Penicillium spp., Chrysosporium spp. and Aspergillus spp. During the study period, a new unit was built in the hospital, which coincided with an increase in Cladophialophora spp., Aspergillus spp., and Fusarium spp. colony counts. Yeasts were found in 39.4% of samples obtained from healthcare staff (16.7% from interdigital spaces, 12.1% from nailbeds, and 10.6% from oropharynx) and in 44% of furniture samples, with a predominance of the Candida genus (C. albicans, C. guilliermondii, C. parapsilosis e C. lusitaniae), followed by Trichosporon spp. ConclusionsWe found a relatively high number of airborne fungi (potentially pathological) in special areas and expressive levels of yeasts in both biotic and abiotic samples. Microbiological and environmental monitoring should be conducted, especially in special areas which include immunocompromised patients, who are more susceptible to the exposure to environmental and staff-derived pathogens.

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Section: Discussionmentioning

confidence: 97%

Monitoramento de fungos anemófilos e de leveduras em unidade hospitalar

et al. 2005

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“…However, other variables interfere with this relationship: the exact amount of fungi that in fact reach indoor air in clinical units; ventilation rates; protective measures present in wards (particularly the presence of air filtration systems); fungal colonization indoors; other routes for fungal access besides air; patient immune response; administration of prophylactic antifungal treatments. Nevertheless, some studies reported an association between outdoor fungi and incidence of indoor infections (Bouza et al, 2002;Radin et al, 1983;Srinivasan et al 2002). The relationship between outdoor and indoor airborne fungi is much easier to find and has been observed by several researchers (Brenier-Pinchart et al, 2009;Curtis et al, 2005;Dassonville et al, 2008;Falvey & Streifel, 2007;Pini et al, 2004).…”

Section: Air Filtration Systemsmentioning

confidence: 93%

“…If large renovation works take place in units admitting risk patients, the patients should be transferred far from construction sites. Airborne fungal levels are significantly higher when clinical units are subjected or close to construction or building demolition (Bouza et al, 2002;Cooper et al, 2003;Srinivasan et al, 2002). The adoption of all protected measures described in chapters 4.2 and 4.3 allows an efficient and protective environment to patients (Bouza et al, 2002;Cooper et al, 2003;Srinivasan et al, 2002).…”

Section: Prevention During Hospital Construction and Renovation Workmentioning

confidence: 99%

“…Airborne fungal levels are significantly higher when clinical units are subjected or close to construction or building demolition (Bouza et al, 2002;Cooper et al, 2003;Srinivasan et al, 2002). The adoption of all protected measures described in chapters 4.2 and 4.3 allows an efficient and protective environment to patients (Bouza et al, 2002;Cooper et al, 2003;Srinivasan et al, 2002). Additional attention should be given to the presence of barriers that limit the access of fungi and other particles to wards (doors that should be kept closed as long as possible, as well as tightly-closed windows).…”

Section: Prevention During Hospital Construction and Renovation Workmentioning

confidence: 99%

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Fungal Air Quality in Medical Protected Environments

Araújo¹,

Cabral²

2010

Air Quality

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“…Several studies have been conducted on air borne microorganisms (Perdelli et al, 2006, Nourian and Badalli, 2001, Azizyfar et al, 2009, Bouza et al, 2002. While none of them has focused on the effect of population and people density on fungi concentration and the relationship between indoor and outdoor environment.…”

Section: Introductionmentioning

confidence: 99%

Visiting Hours Impact on Indoor to Outdoor Ratio of Fungi Concentration at Golestan University Hospital in Ahvaz, Iran

Soleimani¹,

Sadeghi-Nejad²,

Alighardashi³

et al. 2017

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Prevalence of diseases originated from air pollution such as asthma and allergies, can be attributed to the bioaerosols. Bacteria and fungi are the main sources of hospital infections, which cause most of the diseases and mortality. The aim of this study was to determine the ratio of indoor to outdoor fungi concentration, the effect of population and people density on fungi concentration and the relationship between indoor and outdoor environment. In this study, three stations were used: outdoor of the hospital, general indoor and ICU wards of the Ahvaz hospital. These locations were chosen for sampling of the airborne fungi from October to December 2010. The samples were collected in 2 min, flow rate of 28.3 L/min using quick take (SKC Inc., PA, USA), based on the Andersen method.The three dominant culturable fungi genera in sampling stations were Aspergillus, Penicillium, and Cladosporium. The average of total culturable fungi concentration before visiting time was 365.8 CFU m -3 and increased to 578CFU m -3 after visiting time. The indoor to outdoor ratios (I/O) in ICU and internal for fungi before visit were 0.36 and 0.68, respectively. However, these ratios in ICU and internal station for fungi after visit were 0.78 and 0.99, respectively. Following the visit of the visitors, the concentration of fungi available indoor was conspicuously higher (even in the wards in which no visitors were allowed; e.g. ICU, etc). Hence the amount of indoor fungi was affected by the concentration of outdoor fungi and visitors crowd.

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Demolition of a hospital building by controlled explosion: the impact on filamentous fungal load in internal and external air

Cited by 57 publications

References 53 publications

Monitoramento de fungos anemófilos e de leveduras em unidade hospitalar

Monitoramento de fungos anemófilos e de leveduras em unidade hospitalar

Fungal Air Quality in Medical Protected Environments

Visiting Hours Impact on Indoor to Outdoor Ratio of Fungi Concentration at Golestan University Hospital in Ahvaz, Iran

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