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url = https://www.npr.org/tags/804916759/covid-19
covid-19 : npr
Breakthrough infections might not be a big transmission risk. Here's the evidence
Are vaccinated people who get COVID as likely to spread the infection as unvaccinated people? Scientists don't think so.
October 8, 2021 • A final round of door knocking for a follow-up survey is now set to last until early 2022, raising concerns about whether the bureau can determine which groups were undercounted in the 2020 census.