Data Report
Covid Studies And Papers => Masking Studies => Topic started by: Data Report on September 02, 2024, 12:49:50 am
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Effectiveness of Face Mask or Respirator Use in Indoor Public Settings for
Prevention of SARS-CoV-2 Infection — California, February–December 2021.
This report was posted on February 2022.
Source of information.
1. CDC
https://www.cdc.gov/mmwr/volumes/71/wr/pdfs/mm7106e1-H.pdf