Efficacy of influenza vaccination in preventing Methicillin-resistant Staphylococcus auresus (MRSA) infection among the institutionalized elderly

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1.A case control study was conducted to evaluate the factors related to MRSA infection among the institutionalized elderly in winter months. The institutionalized elderly with MRSA infection showed more severely limited activities of daily living than those without MRSA infection. The residents with antibiotics therapy as well as those with fever (38.0℃+) were more commonly seen in the MRSA group than the non-MRSA group. The proportion of vaccinated residents did not differ between the two groups because both group showed high vaccination rates.2.An ecological study was conducted to evaluate the factors associated with the influenza-related MRSA infection in the elderly care facilities. Compared with the institutions without MRSA infection, bed-ridden residents, influenza infection, influenza-outbreak, pneumonia, and hospitalization of residents were more common among the institutions with MRSA infection. Although there was no difference between two groups, only a small number of encouraged vaccination to a visiting family member or delivery person in both groups. In contrast, both MRSA and non MRSA groups showed high vaccination rates among the institutionalized elderly.3.Influenza vaccines are recommended not only for the institutionalized elderly but also for nursing staffs, visiting family members and delivery people.