Invasive group A streptococcal infection presenting in a 10-year-old girl

Invasive group A streptococcal (iGAS) infections are systemic conditions caused by Streptococcus pyogenes.In children, these infections can present as streptococcal toxic shock syndrome, necrotizing fasciitis, bacteremia, septic arthritis, osteomyelitis, pneumonia, and meningitis.Early symptoms are often non-specific, but the condition can rapidly progress to a critical state.During the twentieth century, the incidence and severity of these infections declined markedly, mainly due to the introduction of antibiotic therapy.However, since the early 1980s, there has been a reported increase in the frequency of severe infections, occasionally manifesting as clustered outbreaks.More recently, several countries have documented a significant resurgence of pediatric iGAS cases, which have been particularly fatal in children under 10 years of age.Here, we report a case of iGAS in a previously healthy 10-year-old girl who presented with bilateral hip pain following flu-like symptoms.The disease rapidly progressed, involving both ankles and the right upper extremity.Upon arrival at our emergency department, she was diagnosed with septic arthritis, osteomyelitis, and suspected necrotizing fasciitis.The condition further advanced to streptococcal toxic shock syndrome, necessitating aggressive medical and surgical intervention.Blood, tissue, and throat cultures all confirmed S. pyogenes of the emm1 type.This case highlights the importance of early recognition and maintaining a high index of suspicion for iGAS in children with rapidly worsening clinical conditions, even in the absence of identifiable risk factors.