a vaccine has been shown to be more than
90 effective in preventing covet 19.
that's good news right but it sadly
doesn't mean we can get the vaccine
tomorrow
this is a preliminary analysis from a
phase 3 trial
and more evidence is needed about how
safe and effective this vaccine is
and then regulators need to be convinced
that it can meet quality standards
before it can be given to more people
before we get too carried away we really
have to be careful about
safety and scale around the vaccine so
whilst we can go with confidence
i don't think we're seeing any return to
normal by christmas
but the companies behind the vaccine
that's pfizer and bioentech
they're going to apply for emergency
approval to use the vaccine
by the end of november we'll do our best
we've been working day and night
the clock never stops in our labs or
offices so we'll keep on with that
momentum
this vaccine will need to be given in
two doses around three weeks apart
but storing it is going to be a big
challenge it needs to be kept in ultra
cold conditions at around minus 80
degrees celsius that's a big challenge
but the companies believe they can
supply 50 million doses by the end of
this year
and around 1.3 billion by the end of
2021.
it's important to say this is not the
only covid19 vaccine currently in
development
they're around a dozen at the same stage
of testing and we could have others soon
there's a kind of tendency that we when
we get excited about these vaccines is
to think about vaccines as a sort of
silver bullet
and this cannot replace just the time
and tested methods of track and trace
monitoring the outbreak
changing our behavior so extremely
exciting
very hopeful but let's not take our eye
off the ball of the very basics of how
we respond to health crises
you