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Memorias del Instituto de Investigaciones en Ciencias de la Salud

versão On-line ISSN 1812-9528

Resumo

SANABRIA, R et al. Nasal carriage of staphylococcus aureus in hospital staff. Frequency and ntimicrobial sensitivity pattern. Mem. Inst. Investig. Cienc. Salud [online]. 2003, vol.2, n.1, pp. 29-33. ISSN 1812-9528.

ABSTRACT Staphylococcus aureus (Sau) is a frequent agent of infections in breast feeding babies and children being the colonization of nasal fossas the usual infection source. The microorganism dissemination in a hospital context occurs by aerosolization and interpersonal contact between hospital staff and patients. This study determined the prevalence of nasal carriers of Sau in the hospital staff of the Professorship of Pediatrics of the Hospital de Clínicas (CPHC), the Maternal-Child Center of the National University of Asuncion (CMI) and the Hospital Santísima Trinidad of the Ministry of Health and Public Welfare (HST). The sensitivity pattern to antimicrobials of the isolated strains was also evaluated. Samples were collected by nasal swabbing, transported in Stuart medium to the laboratory of Microbiology of the IICS, cultured in 5% sheep blood agar and incubated at 35°C in CO environment for 48 hs. Identification of Staphylococcus aureus was carried out by conventional methods and the 2 antimicrobial sensitivity was determined according to standardised guidelines. The prevalence of Sau nasal carriage in 141 subjects of the hospital staff was 31% (n=45), distributed in 38% (13/34) in the HST, 32% (17/53) in the CPHC and 27% (15/54) in the CMI. Of the 43 strains, 98% (42) was resistant to penicillin, 28% (12) to gentamicin, 28% (12) to erythromycin, 21% (9) to oxacillin, 9% (4) to rifampicin, 5% (2) to cotrimoxazole and 2% (1) to ciprofloxacin. Sau carriage in hospital staff is frequent. Therefore, the careful hand washing and use of prophylactic and hygienic measurements have major importance to avoid the dissemination of infections.

Palavras-chave : Hospital staff; nasal carriage; Staphylococcus aureus; methicillin resistant.

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