MULTI-DRUG RESISTANT BACTERIA COLONIZATION IN A RESIDENTIAL AGED CARE FACILITY

Abstract

Abstract
Introduction: Bacterial resistance is a growing problem with an unfavorable economic and social impact. The epidemiological contribution of residential aged care facilities has not been sufficiently evaluated in our setting.
Methods: Seventy-two residents, were studied to detect colonization, nasal (Methicillin-resistant Staphylococcus aureus) and rectal (ESBL- enterobacteriaceae, KPC-enterobacteriaceae and vancomycin-resistant ).
Results: The residents, with an average age of 85.8 years, the majority of whom were women (75%), had an average length of stay of 1,504 days. 62.5% had a Charlson score >4 and 58.3% an ADL (Activity daily living) >1; 23.6% of them received antibiotics in the last month; 13.9% were admitted to a hospital in the last 6 months. 22.2% were colonized: ESBL-enterobacteriaceae, 20.8%; Methicillin-resistant Staphylococcus aureus, 2.8%; KPC-enterobacteriaceae, 1.4% and EVR, 1.4%. Previous antibiotic use was the only risk factor identified (OR 6.09) in ESBL-enterobacteriaceae colonized. In no case were roommates of ESBL carriers colonized.
Discussion: Colonization by ESBL-enterobacteriaceae was the most frequent and previous antibiotics the risk factor. Cross transmission does not appear to have been relevant.