The war against COVID-19 has changed because of the highly contagious delta variant, the U.S. Centers for Disease Control said, proposing a clearer message, mandatory vaccines for health workers and a return to universal masking.
source https://www.cbc.ca/news/health/the-covid-19-war-has-changed-due-to-delta-variant-cdc-says-1.6124795?cmp=rss
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