(CNN) -- According tot he CDC, upwards of a million people have gotten unauthorized booster shots of the COVID-19 vaccine.
Those doses were administered before the FDA on Thursday authorized third doses for certain people with compromised immune systems.
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On Friday, vaccine advisers to the CDC voted to recommend an extra dose in those individuals in accordance with the authorization.
The CDC says roughly 140 million people have completed a two-dose regimen of either the Moderna or Pfizer-Biontech COVID-19 vaccine.
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