Quantifying crowding-ventilation effect on respiratory infections
Wei Jia, Pan Cheng, Jian Hang, Hua Qian, Yuguo Li · 2026
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Description
Wei Jia's team quantified how crowding plus poor ventilation drives respiratory infection risk, in a 2026 study. Crowded indoor spaces drive outbreaks and superspreading, yet the interplay of crowding, room size, and ventilation was underexplored. The team built a framework using effective clean flow rate, combining clean airflow with volume-time air clearance and intake fraction time.
Outbreak data from jails, earthquake shelters, and dormitories showed modest spaciousness of 16 to 32 cubic meters per person raised effective clean flow by 8.7 to 17.6 liters per second per person in low-ventilation settings. Current ASHRAE 62.1-2022 standards fall short in crowded spaces, the authors warn, heightening infection risk where people pack tightest.
Catalog record
| CREATOR | Wei Jia, Pan Cheng, Jian Hang, Hua Qian, Yuguo Li |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 87 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |