Nurse Sandra Lindsay receives the second dose of a Pfizer coronavirus disease (COVID-19) vaccine, at Long Island Jewish Medical Center January 4, 2021 in the Queens borough of New York City.
Shannon Stapelton | Getty Images
BioNTech and partner Pfizer warned on Monday that they had no evidence that their jointly developed vaccine will continue to protect against Covid-19 if the booster shot is given later than tested in trials.
"The safety and efficacy of the vaccine has not been evaluated on different dosing schedules as the majority of trial participants received the second dose within the window specified in the study design," the companies said in a joint statement, referring to prime and a booster shots given three weeks apart.
"There is no data to demonstrate that protection after the first dose is sustained after 21 days."
Germany was considering on Monday whether to allow a delay in administering the second dose to make scarce supplies go further after a similar move by Britain last week. Separately, Denmark approved a delay of up to six weeks between the first and second shots of the vaccine.
January 05, 2021 at 12:06AM
https://ift.tt/3rUfDva
BioNTech says no data to support delayed vaccine booster shot offers Covid protection - CNBC
https://ift.tt/2DVP6sH
No comments:
Post a Comment