 Question
open on need for COVID booster shot, data awaited, WHO says
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[July 09, 2021]
GENEVA (Reuters) - The World Health
Organization said on Friday that it was not clear whether COVID-19
booster vaccines will be needed to maintain protection, until further
data is collected.
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 Pfizer Inc plans to ask U.S. regulators to authorize a booster dose
of its COVID-19 vaccine within the next month, the drugmaker's top
scientist said on Thursday, based on evidence of greater risk of
reinfection six months after inoculation and the spread of the
highly contagious Delta variant. [L2N2OK2VD]
"We don’t know whether booster vaccines will be needed to maintain
protection against COVID-19 until additional data is collected, but
the question is under consideration by researchers," the WHO said in
a reply to a Reuters query.
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 "There is limited data
available on how long protection from current
COVID-19 vaccine doses lasts and whether an
additional booster dose would be beneficial and
for whom," it said.
(Reporting by Stephanie Nebehay; Editing by Mark
Heinrich)
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