Assessment of bioaerosol particle characteristics at different hospital wards and operating theaters: A case study in Tehran

Bolookat, Fatemeh; Hassanvand, Mohammad Sadegh; Faridi, Sasan; Hadei, Mostafa; Rahmatinia, Masoumeh; Alimohammadi, Mahmood

doi:10.1016/j.mex.2018.11.021

Cited by 23 publications

(22 citation statements)

References 47 publications

(90 reference statements)

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“…We found lower concentrations of fungi than bacteria in all samples. Consistent with our results Mousavi et al (2019) and Bolookat et al reported the higher level of bacteria in hospitals bioaerosols samples [ 9 , 24 ].…”

Section: Discussionsupporting

confidence: 93%

Contamination of obsterics and gynecology hospital air by bacterial and fungal aerosols associated with nosocomial infections

Nasiri

Gholipour

Akbari

et al. 2021

J Environ Health Sci Engineer

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Bacterial and fungal bioaerosols are a global concern due to nosocomial infections, especially in developing countries. Our study aimed to detect fungal and bacterial bioaerosols in different wards of an obstetrics and gynecology hospital air samples. 240 bioaerosol samples were collected by performing impaction method from different wards of a hospital in the central part of Iran, during two seasons. Fungi genera and bacteria species are recognized by cultivation. Concentrations of bacteria and fungi were ranged from 44 to 75 CFU/m 3 and 8 to 22 CFU/m 3 , respectively. Labor Delivery and Recovery (LDR) and Emergency room had first and second most contaminated air among all the hospital wards. No significant difference between microbial load of wards which used natural ventilation and heating, ventilating, and air conditioning (HVAC) system was observed. The microbial load was not affected significantly by temperature, working shift, and Inpatient Bed Occupancy Rate (IBOR). Fungal load related significantly with relative humidity. Staphylococcus aureus (detected in 48.3% of samples) and Penicillium (27%) were the most predominant isolated bacteria and fungi, respectively. The results revealed that the level of bacteria and fungi responsible for nosocomial infections in the air of this hospital is very low. Although levels of microbial contamination are relatively low, it is important to investigate the effect of bioaerosols on nosocomial infections, especially in neonates.

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Section: Discussionsupporting

confidence: 93%

Contamination of obsterics and gynecology hospital air by bacterial and fungal aerosols associated with nosocomial infections

Nasiri

Gholipour

Akbari

et al. 2021

J Environ Health Sci Engineer

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“…Our results indicated that heterotrophic bacteria were the most abundant microorganisms in the air of the investigated pharmacies. Similar results were obtained by Bolookat et al (2018) investigating hospital in Tehran: the average concentration of bacteria (919 CFU m -2 ) was higher than the average concentration of molds (796 CFU m -2 ). The highest average concentration of heterotrophic bacteria was recorded in summer (1054 CFU m -3 ) and the lowest, in winter (509 CFU m -3 ).…”

Section: Bacterial Bioaresol Concentrationsupporting

confidence: 86%

“…In other studies Aspergillus spp. were the most common molds isolated from the hospital environment, constituting 49.9% (Bolookat, et al 2018) and 47% (Cho et al 2018) of all molds.…”

Section: Concentration and Identification Of Moldsmentioning

confidence: 99%

Microbiological air quality in pharmacies and an antibiotic resistance profile of staphylococci species

2020

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The air in public facilities contains microorganisms which may cause a wide variety of clinical syndromes in humans. This is particularly important in primary healthcare units, where patients with reduced immunity and staff are directly exposed to microbial pathogens. Air samples were collected from dispensing areas (customer areas) of five pharmacies using MAS-100 air sampler. The concentration of particular groups of microorganisms was determined with the use of selective media. The taxonomic analysis of mannitol-positive bacteria was conducted using the BIOLOG Ò method, based on metabolic characteristics of analyzed strains. The isolated molds were identified based on their macroscopic and microscopic features according to available keys. The antimicrobial susceptibility of identified staphylococci was tested using the disk diffusion method in accordance with The European Committee on Antimicrobial Susceptibility Testing recommendations. The highest average concentrations of heterotrophic bacteria and staphylococci were recorded in two hospital pharmacies. The highest average concentrations of molds were recorded in the pharmacies located in shopping centers. Taxonomic analysis indicated that Cladosporium and Penicillium spp. predominated among the isolated molds while Staphylococcus haemolyticus and Staphylococcus aureus, among mannitol-positive bacteria. Antibiograms showed that the majority of Staphylococcus strains (68.2%) were resistant to erythromycin. There was a statistically significant correlation between the concentration of investigated bacteria and the season of the year as well as the size and location of the pharmacies. The results demonstrate that there is a range of factors affecting air quality in public spaces and emphasize the fact that pharmacies can be a source of potentially pathogenic, drug-resistant bacteria.

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“…Our study demonstrated that fungal bioaerosol concentrations were higher in the inpatient facilities of hospitals compared to the restricted and public areas. The increased fungal bioaerosol concentrations is likely due to the increased bed numbers used in inpatient facilities [40] such as those facilities which accommodate patients in multi-bed rooms. Despite the total fungal bioaerosol concentrations being higher in the inpatient…”

Section: Discussionmentioning

confidence: 99%

Indoor hospital air and the impact of ventilation on bioaerosols: a systematic review

Stockwell

Ballard

O’Rourke

et al. 2019

Journal of Hospital Infection

124

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Assessment of bioaerosol particle characteristics at different hospital wards and operating theaters: A case study in Tehran

Abstract: Graphical abstract

Cited by 23 publications

References 47 publications

Contamination of obsterics and gynecology hospital air by bacterial and fungal aerosols associated with nosocomial infections

Contamination of obsterics and gynecology hospital air by bacterial and fungal aerosols associated with nosocomial infections

Microbiological air quality in pharmacies and an antibiotic resistance profile of staphylococci species

Indoor hospital air and the impact of ventilation on bioaerosols: a systematic review

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