2024 Yes Practical Impact of the COVID-19 Pandemic on Indoor Air Quality and Thermal Comfort in Kindergartens. A Case Study of Slovenia https://www.mdpi.com/1660-4601/18/18/9712 Lovec, Vesna Europe Observational Elementary (K-5) Temperature Humidity Carbon Dioxide (CO2) Kindergartens IAQ COVID-19 Thermal comfort CO2, temperature, and humidity were monitored in Slovenian kindergartens for 125 days before/during COVID-19. Ventilation protocols improved air quality, reducing CO2 by 30%, supporting pandemic-era indoor air strategies in schools. 2021