出版社：Thai Society of Higher Eduction Institutes on Environment
摘要：Airborne transmission is considered as a route for acquisition of methicillin-resistant Staphylococcusaureus (MRSA) infections in hospital environments. Since, control and effective prevention ofMRSA infections require a better knowledge of airborne bacteria. This study was conductedto determine the occurrence of airborne MRSA in different wards of four hospitals in Isfahan,Iran. Air samples were taken using an all-glass impinger (AGI) in four locations in each hospital.Detection of oxacillin resistant airborne bacteria was carried out using culture plates with andwithout antibiotics. Oxacillin resistant isolates were screened for the presence of mecA gene, agenetic element found in MRSA. Oxacillin-resistant bacteria with a range of 15-207 cfu/m3 hada high prevalence and formed about 30%-34% of airborne bacteria. We found that about 63%of the oxacillin resistant isolates carried the mecA gene. The frequency of mecA gene in isolatedoxacillin resistant bacteria from different hospital wards ranged between 9%–26%. Detection ofthe mecA gene in different wards with a relatively high frequency indicated potentially airbornetransmission of MRS in hospital environments. The presence of these airborne bacteria couldpose a considerable threat to human health especially for vulnerable groups of inpatients such aspeople with weakened immune systems.
