Dermatologists should not assume that a subsequent infection in a patient with a prior methicillin-resistant Staphylococcus aureus (MRSA) infection will also be caused by MRSA. Clearly this is not always the case, as in this study of 215 patients, in whom 64 (29.8%) demonstrated reversion to methicillin-sensitive Staphylococcus aureus (MSSA) in a subsequent infection.1 Colonization with staphylococcal strains with variable sensitivity has also been common in the setting of atopic dermatitis.2
Elston DM. Assuming That a Subsequent Infection in a Patient With a Prior MRSA Infection Will Also Be Caused by MRSA. JAMA Dermatol. 2013;149(10):1172. doi:10.1001/jamadermatol.2013.4956
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