Management of Infant Salmonella Infections

Diagnosis and Assessment

Infants under 3 months have a 45% bacteremia rate, and those 3-6 months remain at elevated risk (11%) compared to older children, emphasizing the need for immediate blood cultures before starting antibiotics, as recommended by the Infectious Diseases Society of America 1
Assess for signs of sepsis, severe dehydration, or systemic manifestations that would mandate hospitalization, following guidelines from the Centers for Disease Control and Prevention 2, 3

The American Academy of Pediatrics recommends administering a third-generation cephalosporin (ceftriaxone 50-80 mg/kg/day IV/IM) for 5-7 days as the preferred empiric therapy for infants under 12 months with nontyphoidal Salmonella gastroenteritis 5, 6
If enteric (typhoid) fever is suspected, azithromycin 20 mg/kg/day orally for 7 days is preferred, with a 94% cure rate, as recommended by the World Health Organization 5, 6, 7

The Centers for Disease Control and Prevention recommend administering oral rehydration solution (ORS) as first-line therapy for mild-to-moderate dehydration, with ongoing losses replaced by giving ORS volume equal to stool/vomit losses 4
Continue breastfeeding on demand if breastfed, or resume full-strength formula immediately after rehydration, as advised by the American Academy of Pediatrics 4, 6

Fever should resolve within 4-5 days of appropriate antibiotic therapy, and if no improvement by day 5, consider antibiotic resistance or alternative diagnosis, as recommended by the Infectious Diseases Society of America 5, 6
Do not routinely perform follow-up stool cultures for case management after symptom resolution, but repeat cultures may be required by local health authorities before return to childcare settings, as recommended by the Centers for Disease Control and Prevention 8