2022 No https://doi.org/10.1007/s11869-021-01080-0 Fu, Xi Asia Observational Exposure Study Students Middle/Jr High (6-8) Humidity Carbon Dioxide (CO2) Volatile Organic Compounds (VOCs) Nitrogen Dioxide (NO2) Dust Bacteria Fungi Respiratory symptoms Indoor microbiome PacBio amplicon sequencing Asthma symptoms Malaysia Environmental characteristics Species-level indoor microbiome from 30 classrooms in Malaysian junior high schools was sequenced using PacBio and qPCR; certain bacteria were associated with asthma prevalence, suggesting a region-specific microbial exposure pattern affecting student respiratory health.