Severe Septic Shock Caused by Streptococcus gallolyticus subsp. pasteurianus in an Immunocompetent Infant: Clinical and Diagnostic Implications.

Streptococcus gallolyticus subsp. pasteurianus is a rare pathogen causing bacteremia and meningitis in neonates and infants. We present a case of septic shock with cardiac arrest due to S. gallolyticus subsp. pasteurianus infection in a previously healthy infant and review of the literature. Although S. gallolyticus subsp. pasteurianus infections are typically considered to follow a mild clinical course in infants, this case highlights the potential for aggressive progression even in the absence of comorbidities. Evidence points that infants without apparent perinatal insults or immune dysfunction are susceptible. Therefore, clinical awareness is crucial for early diagnosis and prompt treatment.