CNN Breaking News @cnnbrk
Pfizer said it's seeing waning immunity from its Covid-19 vaccine and plans to develop a booster dose. Hours later, the CDC and FDA say Americans don't need booster shots yet. https://t.co/ungAuJkaF0 — PolitiTweet.org
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CNN Breaking News @cnnbrk
Pfizer said it's seeing waning immunity from its Covid-19 vaccine and plans to develop a booster dose. Hours later, the CDC and FDA say Americans don't need booster shots yet. https://t.co/ungAuJkaF0 — PolitiTweet.org