Very depressing.
RT @EricTopol: "Odds of infection for those who did not always compared to those who always wore a mask was 66% higher pre-Delta, 53% higher during Delta, declining to 16% higher during Omicron"
https://www.medrxiv.org/content/10.1101/2022.05.27.22275689v1
Omicron's hyper-transmissibility necessitates high- quality masks (KN95/N95)

🐦🔗: https://nitter.eu/NChildersMEP/status/1530645045736574976