Infant With Invasive Nontyphoidal Salmonellosis and Mastitis.

Mastitis in early infancy is uncommon.1 Mastitis cases in full-term neonates and nonlactational mastitis in older children have been reported, with Staphylococcus aureus being the most common pathogen, but concurrent bacteremia or meningitis is rare.1-3 Gram-negative enteric bacteria as pathogens have been uncommonly reported, and mastitis due to Salmonella typhi3 and nontyphoidal Salmonella (NTS) is rare.4 Empiric management of mastitis and breast abscess in infancy according to the available literature includes parenteral and oral antibiotics with antistaphylococcal activity and surgical interventions such as aspiration and/or incision and drainage in the presence of abscesses.1,2 Here, we report the case of a previously well 7-week-old infant girl with invasive NTS infection and mastitis confirmed by respective cultures.