Prevalencia de Staphylococcus aureus meticilino resistente (SARM) en el personal operativo del área de emergencia del Hospital Básico Isidro Ayora Loja-Ecuador.

Abstract

Abstract: Methicillin-resistant Staphylococcus aureus (MRSA) is a gram-positive coccus, resistant to the action of antibiotics often used in staphylococcal infections. This bacterium can colonize the skin and nose of healthy people. The objective of the research was to establish epidemiological data on MRSA in the operative personnel of the Emergency Area of the Isidro Ayora-Loja Basic Hospital. A total of 200 samples were analyzed, obtained by swabbing nostrils and hands of health personnel at two moments of their daily workday. For the phenotypic identification of MRSA, the disc diffusion technique of cefoxitin was used, in addition to different commonly used antibiotics such as: clindamycin, trimethoprim-sulfamethoxazole and linezolid. The S. aureus strains were cryopreserved for future studies. The prevalence of S. aureus was 33% (66/200), of which 33.3% (22/66) corresponded to MRSA. A higher incidence of this microorganism was reported in nursing assistants with 31% (7/22). A resistance profile of 60.6% (40/66) for clindamycin, 46.9% (31/66) in trimethoprimsulfamethoxazole was determined and linezolid-resistant strains were not found.