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By Francesco Guarascio
BRUSSELS, Nov 4 (Reuters) - Europe's drug regulator will not
set a minimum level of efficacy for potential COVID-19 vaccines
when considering them for approval, it said on Wednesday, taking
a different approach to that of its U.S. counterpart.
Human studies need to demonstrate a convincing level of
efficacy, but whether a shot would be considered acceptable for
approval will be assessed case by case based on all available
data on its safety and efficacy, the European Medicines Agency
(EMA) said in an email.
"Therefore it is not possible to specifically quantify in
advance the minimum level of efficacy for a vaccine to be
considered acceptable for approval," it said.
The U.S. Food and Drug Administration has said vaccines must
demonstrate at least 50% efficacy - meaning at least twice as
many infections among volunteers who got a placebo as among
those in the vaccine group.
The EMA is reviewing candidate vaccines by drug makers
Pfizer, AstraZeneca and Moderna under a
real-time release process, in an effort to speed up the approval
if trials of any of those vaccines are successful. They are
undergoing late-stage trials.
The EMA said on Wednesday its human medicines committee
(CHMP) is drawing up guidance on its requirements for COVID-19
vaccine approval and will publish the information as soon as it
is ready.
(Reporting by Francesco Guarascio in Brussels @fraguarascio;
Writing by Josephine Mason in London, editing by Emelia
Sithole-Matarise)
