Identification of Risk Factors for Nasal Colonization of Methicillin-resistant Staphylococcus aureus and Vancomycin-resistant Staphylococcus aureus in Health Workers at a Tertiary Hospital, Indonesia

Siti Nur Rohmah; Rizka Humardewayanti  Asdie; Ida Yasopa; Daya  Daryadijaya

doi:10.3889/oamjms.2023.11441

Authors

Siti Nur Rohmah Department of Internal Medicine, Faculty of Medicine, Public Health and Nursing Universitas Gadjah Mada/Dr. Sardjito Hospital, Yogyakarta, Indonesia https://orcid.org/0000-0002-9379-0755
Rizka Humardewayanti Asdie ropical Medicine Division, Department of Internal Medicine, Faculty of Medicine, Public Health and Nursing Universitas Gadjah Mada/Dr. Sardjito Hospital, Yogyakarta, Indonesia https://orcid.org/0000-0002-9707-5839
Ida Yasopa Department of Internal Medicine, Dr. H. Soemarno Sosroatmodjo Hospital, Kuala Kapuas, Central Kalimantan, Indonesia
Daya Daryadijaya Department of Internal Medicine, Dr. H. Soemarno Sosroatmodjo Hospital, Kuala Kapuas, Central Kalimantan, Indonesia https://orcid.org/0000-0002-2570-7120

DOI:

https://doi.org/10.3889/oamjms.2023.11441

Keywords:

MRSA, VRSA, Health workers, Risk factors

Abstract

BACKGROUND: Methicillin-resistant Staphylococcus aureus (MRSA) and Vancomycin-resistant S. aureus (VRSA) frequently cause nosocomial infections yearly. During the COVID-19 pandemic, the potential for excessive use of antibiotics is a global threat to the increasing incidence of multiresistant bacteria.

AIM: This study aimed to determine MRSA and VRSA colonization and identify factors associated with the risk of MRSA and VRSA nasal colonization in health workers at Dr. Soemarno Sosroatmodjo General Hospital, Kuala Kapuas, as one of the type C hospitals in Indonesia.

METHODS: This cross-sectional analytic study at Dr. Soemarno Sosroatmodjo General Hospital, a tertiary hospital in Indonesia. A 128 health workers’ subjects had undergone nasal swab screening for MRSA and VRSA colonization examinations. Then, they were asked to complete a questionnaire concerning the risk factors of MRSA and VRSA infections.

RESULTS: Nasal swab results obtained as many as 30 (23.5%) MRSA positive subjects and 6 (4.7%) subjects with positive VRSA. The most common risk factors that led to MRSA colonization included a history of positive MRSA in the previous hospital (60%), a history of ear, nose, and throat infection (41.7%), and did not do hand rub/handwash (36.7%). In comparison, the most risk factors for VRSA colonization were having pigs farm at home (33.3%), a history of positive MRSA in the previous hospital (20%), and a history of hospitalization in the past 6–12 months (16.7%). The results of multivariate analysis showed the most powerful and statistically significant risk factors in influencing nasal MRSA colonization were a history of positive MRSA in the previous hospital (OR 13.69, 95% confidence intervals [CI]: 1.34–140.25, p = 0.028) and did not do hand rub/handwash (OR 2.95, 95% CI: 1.167–7.49, p = 0.023). Meanwhile, marital status (OR 0.160, 95% CI: 0.02–1.06), p = 0.058) and home care service (OR 6.10, 95% CI: 0.79–46.96, p = 0.082) were the strongest risk factors for nasal colonization of VRSA but not statistically significant.

CONCLUSION: As many as, 23.5% and 4.7% of healthcare workers’ subjects were found with nasal colonization of MRSA and VRSA, respectively. Accordingly, strict policies are needed to minimize the transmission of these organisms from the hospital setting to the community.

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