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url = https://www.npr.org/tags/804916759/covid-19
covid-19 : npr
How Long Does COVID Immunity Last Anyway?
With booster shots on the horizon for some people, one of the biggest questions is: Am I still protected against COVID-19 if I've only had two doses of the vaccine? As science correspondent Michaeleen Doucleff reports, the answer is...complicated.
September 17, 2021 • Thousands of NPR readers shared what they'd say if someone asked them why they are wearing a mask. Here's a selection of their responses.