Frankfurt:
BioNTech and companion Pfizer warned on Monday that they had no proof that their jointly created vaccine will continue to defend against COVID-19 if the booster shot is offered 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 businesses mentioned in a joint statement, referring to prime and a booster shots offered 3 weeks apart.
“There is no data to demonstrate that protection after the first dose is sustained after 21 days.”
Germany was thinking of on Monday no matter whether to permit a delay in administering the second dose to make scarce supplies go additional just after a equivalent move by Britain final week. Separately, Denmark authorized a delay of up to six weeks amongst the initial and second shots of the vaccine.
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