When COVID-19 first began spreading, public health and medical experts began talking about the need…
View More Herd immunity appears unlikely for COVID-19, but CDC says vaccinated people can ditch masks in most settingsHome »
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When COVID-19 first began spreading, public health and medical experts began talking about the need…
View More Herd immunity appears unlikely for COVID-19, but CDC says vaccinated people can ditch masks in most settings