RESUMEN
Two year (1998 and 1999) extensive survey was carried out in Mandya district hospital, Karnataka for a period of three years to monitor the prevalence of Staphylococcus aureus, Pseudomonas aeruginosa (S. aureus and Ps. aeruginosa) from the indoor air samples of operation theater labor room, children's ward, male and female general wards postoperative wards etc. A rotary air sampler loaded with manital salt and Pseudomonas selection agar media strips were used to collect the samples from various sites. The survivallence results revealed the prevalence of S. aureus and Ps. aeruginosa in almost all sampling sites, irrespective of season indicating their long-term survival and consequent threat to hospitalized patients as well the working employees.