Original ResearchPublished 8 October 2026Pathogen spectrum and triple-criteria interpretation algorithm of BALF-targeted NGS in children with refractory severe community-acquired pneumonia in mountainous Northeastern Sichuan: a single-center retrospective studyRongjie Chen · Zhe Xu · Tingting He · Xiao Liu · Yi Ding · Xin HouFrontiers in Cellular and Infection Microbiologydoi 10.3389/fcimb.2026.1929990