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Scientific American

2021-07-04, 09:23
WHO Urges Vaccinated People to Wear Masks; CDC Still Says No Need


World Health Organization leaders advised caution as new variants threaten progress against the pandemic



-- Read more on ScientificAmerican.com


https://www.scientificamerican.com/artic...s-no-need/
www.chinaphonearena.com > Off The Wall > Tech & Science > [Sci-Am] WHO Urges Vaccinated People to Wear Masks; CDC Still Says No Need