@AnneSosin
The benefits of NPIs, specifically #elastomeric #respirator #masks (#N99, #FFP3, #P3, #P100) and #HEPA filters, are monumental. Frankly boosters and treatment access do much, much less.
#FFP3s ended in-hospital transmission (Cambridge, UK): https://www.cam.ac.uk/research/news/upgrading-ppe-for-staff-working-on-covid-19-wards-cut-hospital-acquired-infections-dramatically
Covid in hospital air before #HEPA installed, gone after #HEPA installed (Cambridge, UK again): https://pubmed.ncbi.nlm.nih.gov/34718446/
#elastomeric #respirator #masks #n99 #ffp3 #p3 #P100 #HEPA #ffp3s