Birdwatch Note Rating
2024-09-21 05:44:30 UTC - HELPFUL
Rated by Participant: 68BC3AFCA5386D14CC14BBBCC6D48D9B9436D860C16EE7E4196A4F71093D9D18
Participant Details
Original Note:
The BBC article is misleading. Randomised trials for mask types are needed for "high quality evidence", but impossible, because participants know what type of mask they're wearing. A real-world study showed that switching to FFP3 masks reduced Covid infections by up to 100%. https://www.cam.ac.uk/research/news/upgrading-ppe-for-staff-working-on-covid-19-wards-cut-hospital-acquired-infections-dramatically
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