Staphylococcus aureus colonization among HIV patients in Santos / SP, Brazil Prevalência e perfil de resistência aos antimicrobianos
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Abstract
Infections caused by Staphylococcus aureus strains grow every year in HIV-positive individuals, a fact that may indicate recent hospitalizations and widespread use of antibiotics, and are considered responsible for the morbidity and mortality of these patients. The present study aimed to evaluate the prevalence of colonization by S. aureus in the nasal cavity of patients with HIV monitored by the Section of Reference Center for AIDS in Santos / SP (SECRAIDS - Santos) and to qualify the antimicrobial resistance profile of the strains isolated. In this study, 21 patients with HIV were evaluated. Structured questionnaires were applied to HIV-positive patients to determine their routine in outpatient settings and history of illnesses and hospitalizations. The isolation and identification of S. aureus strains was performed by surface sowing on selective agar. Biochemical tests were performed to confirm the expected results. The Staphylococcus spp. strains were isolated, identified and submitted to the Antimicrobial Sensitivity Test by disk-diffusion. It was possible to evaluate that 90% of the patients had colonization by Staphylococcus spp., of which 47.6% corresponded to S. aureus strains. Among the isolated samples, 20% were classified as MRSA (Methicillin-resistant Staphylococcus aureus). Results similar to the data described in the literature corroborate the high prevalence of colonization by S. aureus and MRSA strains in seropositive patients. Research by MRSA is becoming increasingly important, both to improve the quality of life of the patient being treated and to prevent and eradicate the carrying of these opportunistic bacteria.
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