January 4, 2021 coronavirus news
CNNA health worker administers a vaccine to a patient in their vehicle during the first day of mass Moderna COVID-19 vaccinations at the Kentucky State Fair and Exposition Center on Monday, January 4, in Louisville, Kentucky. Jon Cherry/Getty Images Anyone who receives the Moderna or Pfizer vaccine must get both doses, two top US Food and Drug Administration officials said Monday. “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, 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. And for the Moderna COVID-19 vaccine, the interval is 28 days between the first and second dose.” British officials have said they will allow more than 21 days between doses of Pfizer’s vaccines and would consider allowing people to get vaccinated with two different vaccines. “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.” It’s understandable that people may want to stretch the vaccine supply, they said.