MRSA Necrotizing Fasciitis of the Neck and Chest in a 3-Month-Old Infant.

We report the case of a 3-month-old infant with methicillin-resistant Staphylococcus aureus (MRSA) necrotizing fasciitis of the neck and chest complicated by bacteremia, pneumonia, and mediastinitis, which required multiple surgical debridements, including median sternotomy. The case is unsual given the patient's age and causative pathogen, and underscores the importance of early diagnosis, timely surgical intervention, and multidisciplinary collaboration to ensure survival.