2024 Yes Building and Indoor Environmental Quality Assessment of Nigerian Primary Schools: A Pilot Study https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6486416/ Toyinbo, Oluyemi Africa Observational Elementary (K-5) Temperature Humidity Carbon Dioxide (CO2) Carbon Monoxide (CO) Bacteria Indoor environmental quality Thermal acceptability Natural ventilation Cleaning School classrooms Educational buildings On-site assessments in 15 classrooms measured temperature, CO, CO₂, and ATP on desks. Despite adequate ventilation, thermal discomfort and surface contamination were common, highlighting needs for cooling and improved hygiene in schools. 2019