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Methicillin-resistant Staphylococcus aureus nasal colonisation amongst healthcare workers in Kurdistan Region, Iraq.
OBJECTIVES: The aim of this study was to determine the prevalence of nasal carriage of methicillin-resistant Staphylococcus aureus (MRSA) among healthcare workers (HCWs) compared with non-HCWs at Duhok city, Kurdistan Region, northern Iraq.
METHODS: A total of 182 HCWs with different occupations and working in different hospital units as well as 198 non-HCWs were recruited. Nasal swab samples were collected and were inoculated on mannitol salt agar and incubated at 35°C for 48h. Isolates identified as S. aureus underwent antimicrobial sensitivity testing to oxacillin. MRSA isolates were selected and investigated for presence of the mecA gene.
RESULTS: Among the HCWs, 41/182 (22.5%) were carriers of S. aureus compared with 37/198 (18.7%) non-HCWs (P=0.4). Amongst the S. aureus carriers, 25/41 strains (61.0%) isolated from HCWs were MRSA compared with 8/37 strains (21.6%) isolated from non-HCWs (P=0.039). The mean age of MRSA carriers was 35.6±6.7years compared with 30±5.8years for MRSA non-carriers (P=0.0177). The mean working years of MRSA carriers was significantly higher than that of MRSA non-carriers (7.8±5.5years vs. 3.9±5.3years; P=0.04).
CONCLUSIONS: The prevalence of MRSA was very high amongst HCWs. Regular screening of carriers is required for prevention of nosocomial infections.
METHODS: A total of 182 HCWs with different occupations and working in different hospital units as well as 198 non-HCWs were recruited. Nasal swab samples were collected and were inoculated on mannitol salt agar and incubated at 35°C for 48h. Isolates identified as S. aureus underwent antimicrobial sensitivity testing to oxacillin. MRSA isolates were selected and investigated for presence of the mecA gene.
RESULTS: Among the HCWs, 41/182 (22.5%) were carriers of S. aureus compared with 37/198 (18.7%) non-HCWs (P=0.4). Amongst the S. aureus carriers, 25/41 strains (61.0%) isolated from HCWs were MRSA compared with 8/37 strains (21.6%) isolated from non-HCWs (P=0.039). The mean age of MRSA carriers was 35.6±6.7years compared with 30±5.8years for MRSA non-carriers (P=0.0177). The mean working years of MRSA carriers was significantly higher than that of MRSA non-carriers (7.8±5.5years vs. 3.9±5.3years; P=0.04).
CONCLUSIONS: The prevalence of MRSA was very high amongst HCWs. Regular screening of carriers is required for prevention of nosocomial infections.
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