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A 1-Year Trial of Nasal Mupirocin in the Prevention of Recurrent Staphylococcal Nasal Colonization and Skin Infection

Raul Raz; Dan Miron; Raul Colodner; Zmira Staler; Zmira Samara; Yoram Keness
Arch Intern Med. 1996;156(10):1109-1112. doi:10.1001/archinte.1996.00040041109010.
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Background:  The usefulness of nasal mupirocin in preventing recurrent staphylococcal nasal colonization and skin infection has been examined in immunodeficient patients and in healthy staphylococcal carriers but not in immunocompetent staphylococcal carriers who experience recurrent skin infections. We studied 34 such patients.

Methods:  After an initial 5-day course of nasal mupirocin ointment for all patients, 17 patients continued to apply a 5-day course of nasal mupirocin every month for 1 year, and the other 17 patients applied a placebo ointment. Nasal cultures were obtained monthly, and all episodes of skin infection were recorded.

Results:  The overall number of positive nasal cultures was 22 in the mupirocin group and 83 in the placebo group (P<.001), and the number of skin infections was 26 and 62, respectively (P<.002). Eight of the 17 mupirocin-treated patients but only 2 in the placebo group remained free of positive staphylococcal nasal cultures. One of the 10 patients who were free of colonization during the 12-month treatment period had skin infections, in contrast to all 24 of the patients with positive cultures (P<.01). Staphylococci resistant to mupirocin were observed in 1 patient. No adverse effects were reported.

Conclusion:  A monthly application of mupirocin ointment in staphylococcal carriers reduces the incidence of nasal colonization, which in turn lowers the risk of skin infection.(Arch Intern Med. 1996;156:1109-1112)


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