The effect of an enhanced infection-control policy on the incidence of Clostridium difficile infection and methicillin-resistant Staphyloccocus aureus colonization in acute elderly medical patients

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Abstract

Background: Clostridium difficile (CD) infection and methicillin-resistant Staphylococcus aureus (MRSA) colonization are increasingly common in elderly patients, are associated with cephalosporin or prolonged aminopenicillin courses and can be transmitted by direct contact. Management is by side-room isolation. Ward closure may be required to control outbreaks. Methods: Following prolonged bed closures due to CD and MRSA in an acute age-related geriatric service, an enhanced infection control policy was introduced - emphasis on handwashing, cephalosporin restriction, 7-day time limits on antibiotics and feedback of infection rates. The effect of this policy was evaluated by investigating 2467 consecutive admissions in the 9 months before and after its introduction. Results: CD infection fell from 36/1075 admissions (3.35 per 100) to 27/1392 (1.94 per 100; P < 0.05). MRSA incidence fell from 3.95 per 100 to 1.94 (P < 0.01) whilst that in the rest of the hospital continued to fluctuate. Cephalosporin use fell (and aminopenicillin and trimethoprim use rose) by a factor of three. Unoccupied bed days fell from 1164 (12.6%) to 513 (5.1%) over the winter, an increase in bed availability of 4.95 a day. Conclusions: Introduction of the policy was associated with significant reductions in CD infection and unoccupied bed-days and helped maintain a lower incidence of MRSA. It is not clear which elements of the policy most influenced outcome. A multi-centre study is needed to determine whether our findings are generally applicable.

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APA

Stone, S. P., Beric, V., Quick, A., Balestrini, A. A., & Kibbler, C. C. (1998). The effect of an enhanced infection-control policy on the incidence of Clostridium difficile infection and methicillin-resistant Staphyloccocus aureus colonization in acute elderly medical patients. Age and Ageing, 27(5), 561–568. https://doi.org/10.1093/ageing/27.5.561

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