LONDON, Dec 30 (Reuters) - One dose of Oxford/AstraZeneca's
COVID-19 vaccine is around 70% effective after 21 days and
before the second dose is given, a British doctor involved in
the approval of the vaccine said on Wednesday.
"The data shared with us, and I'm not sure is entirely in
the public domain, calculated the vaccine efficacy between day
22 of dose one, to the time of dose two being given, and the
figure is around 70%," said Wei Shen Lim, chair for COVID-19
immunisation of the Joint Committee on Vaccination and
Immunisation.
(Reporting by Kate Holton and Paul Sandle; writing by Alistair
Smout)