- Intermediate levels of indoor relative humidity shown to improve COVID-19 outcomes globally News-Medical.Net
- ‘Indoor ventilation’ can reduce Covid-19 transmission: Study | Mint Mint
- There Might Be a Perfect Indoor Humidity to Curb COVID Spread U.S. News & World Report
- Indoor Humidity Level Linked to COVID-19 Transmission Newsmax
- Study highlights importance of humidity in preventing COVID-19 spread WTNH.com
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