Sara Mansourimoghadam - Department of Environment, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran
Elaheh Zallaghi - PhD in Environmental Pollution. Instructor of Ahvaz Municipality Applied Science, Ahvaz, Iran

Hospitals and other healthcare facilities are complex environments that require ventilation for comfort of patients and control of hazardous emissions. This study was carried out the level of airborne microbial load of Jehangir hospital indoor in Pune-India. Microorganisms are the primary sources of indoor air contamination. The indoor air environment can potentially place patients at greater risk than the outside environment because enclosed spaces can confine aerosols and allow them to build up to infectious levels .Using a microbial air sampler, air samples were taken from a hospital in Pune city. Three factors were investigated to determine how these factors affect the microbial counts, namely the kind of hospital, the type of room and the time of sampling. Some bacterial species were identified in hospital, Staphylococcus aureus (۱۵.۷۴%) was found to be the most common organism, followed by Micrococcus luteus (۱۳%) and coagulasenegative Staphylococcus (۱۳.۵۰%). Maximum bacterial rates were detected in the patient rooms, while minimum bacterial rates were detected in the operating rooms and neonatal wards. The time of visit showed higher microbial rates in hospital. Microbial rates in the patient room, main entrance and intensive care unit (ICU) were found to be influenced by the time of sampling, while the operating room and neonatal ward were not. These high rates in the Jahangir hospital might be attributed to the age of the building (hospital was built in ۱۹۵۵) poor and deficient hygienic conditions, low degree of cleanness and minimal disinfection procedures against airborne bacteria might raise the airborne bio-contaminants. Another factor which might be involved in the latter finding is the number of beds in hospital. And the multiple patients per room (more than one patient in each room) might raise the number of people in rooms and in the corridors.

Air sampling, airborne microflora , bacteria, hospital