Pan A, Catenazzi P, Ferrari L, Tinelli C, Seminari E, Ratti A, Carnevale G, Cogrossi A, Crema L, Dolcetti L, Barosi C, Granata L, La Russa A, Poli N, Tomasoni D, Ceruti T. [Evaluation of the efficacy of a program to control nosocomial spread of methicillin-resistant Staphylococcus aureus].
Infez Med 2001;
9:163-9. [PMID:
12087218]
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Abstract
OBJECTIVE
To evaluate the efficacy of a program to control nosocomial spread of methicillin-resistant Staphylococcus aureus (MRSA).
METHODS
Analysis of the incidence of infection and contamination due to MRSA in patients admitted to the hospital of Cremona 6 months before and 3 years after the introduction of the guidelines (July 1997).
RESULTS
During the 42 months of the study period, on 80705 admissions, 511 cases of MRSA contamination/infection were identified, the incidence being 0.57 cases per 100 admissions. The infection rate dropped from 0.34 (IC95%: 0.25-0.45) in the first 6 months of the study, before the introduction of guidelines, to 0.17 (IC95%: 0.14-0.20) in the following 3 years (p=0.01). Severe infection decreased from 0.18 to 0.1 per 100 admissions, with a 44% decrease (p=0.058), while mild infections diminished from 0.16 to 0.07 per 100 admissions (p=0.045). Methicillin resistance among nosocomial isolates of Staphylococcus aureus was reduced from 53 % to 35 % (p<0.0001).
CONCLUSIONS
The introduction of a program to control the nosocomial spread of MRSA proved effective in reducing both the incidence of infection and the methicillin-resistance of Staphylococcus aureus isolates. The cost effectiveness of the program seems very favourable.
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