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Streptococcus pyogenes, or group A Streptococcus (GAS), causes a wide spectrum of disease ranging from superficial skin infection and pharyngitis to invasive infections, such as sepsis, empyema, necrotizing fasciitis, meningitis, [...]

Haemophilus influenzae serotype B (Hib) causes a range of clinical syndromes, including pneumonia, primary bacteremia, and meningitis (1,2). Childhood immunization with conjugated Hib vaccines has resulted in dramatic decreases in [...]

Group A Streptococcus (GAS) primary peritonitis is a rare cause of pediatric acute abdomen (sudden onset of severe abdominal pain); only 26 pediatric cases have been reported in the English language literature since 1980. We discuss 20 additional cases of pediatric primary peritonitis caused by GAS among patients at Starship Children's Hospital, Auckland, New Zealand, during 2010-2022. We compare identified cases of GAS primary peritonitis to cases described in the existing pediatric literature. As rates of rates of invasive GAS increase globally, clinicians should be aware of this cause of unexplained pediatric acute abdomen. [ABSTRACT FROM AUTHOR]