Group A Streptococcus pharyngitis in Children: New Perspectives on Rapid Diagnostic Testing and Antimicrobial Stewardship.

This article focuses on the diagnosis and management of Group A Streptococcus (GAS) pharyngitis in children, emphasizing the role of rapid diagnostic tests in guiding antibiotic use. It reviews current international guidelines, highlighting differences such as the U.S. recommendation for confirmatory throat culture following negative rapid antigen detection tests (RADTs) versus France's use of RADTs as stand-alone tests without confirmatory culture. The article discusses the higher sensitivity and specificity of newer nucleic acid amplification tests (NAATs) compared to RADTs, their potential to streamline clinical workflow, and concerns about over-detection of GAS carriers leading to possible overtreatment. It underscores the importance of patient selection based on clinical scoring systems like the McIsaac score to improve diagnostic accuracy and antibiotic stewardship, while noting that evolving guidelines will need to address the integration of molecular testing alongside considerations of cost, timeliness, and impact on antibiotic prescribing.