FDA says people need both doses of Covid shots
Anyone who receives the Moderna or Pfizer vaccine must get two full doses, two top US Food and Drug Administration officials said Monday.
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Anyone who receives the Moderna or Pfizer vaccine must get two full doses, two top US Food and Drug Administration officials said Monday.
They also dismissed other ideas for stretching the vaccine supply and said people who are speculating about the possibility of making do with just one dose or cutting doses in half are misinterpreting the data.
"We have been following the discussions and news reports about reducing the number of doses, extending the length of time between doses, changing the dose (half-dose), or mixing and matching vaccines in order to immunize more people against COVID-19," FDA Commissioner Dr. Stephen Hahn and Dr. Peter Marks, who heads FDA's vaccine division, said in a statement.
"Those participants who did not receive two vaccine doses at either a three-or four-week interval were generally only followed for a short period of time, such that we cannot conclude anything definitive about the depth or duration of protection after a single dose of vaccine from the single dose percentages reported by the companies."