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2nd boosters

Thursday

The Biden administration plans to offer updated booster shots in the fall. Mario Tama/Getty Images hide caption

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Mario Tama/Getty Images

Summer boosters for people under 50 shelved in favor of updated boosters in the fall

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Tuesday

The FDA is trying to make "bivalent" COVID vaccines, which target two different antigens, available as soon as September. Robyn Beck/AFP via Getty Images hide caption

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Robyn Beck/AFP via Getty Images

Reformulated COVID vaccine boosters may be available earlier than expected

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Tuesday

US President Joe Biden receives a second booster shot of the Pfizer Covid-19 vaccine a day after the US authorized a fourth dose of either the Pfizer-BioNTech or Moderna Covid-19 vaccines for people 50 and older NICHOLAS KAMM / AFP via Getty Images hide caption

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NICHOLAS KAMM / AFP via Getty Images

Wednesday

The FDA has authorized second booster shots for people over 50 and for some people who are immunocompromised. Justin Sullivan/Getty Images hide caption

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Justin Sullivan/Getty Images

Do I really need another booster? The answer depends on age, risk and timing

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