One Of The Largest Vaccine Trials In The World Says Its Vaccine Is 90% Effective

Pfizer said today is a “great day for science and humanity”, with tests showing no evidence of side effects.

US pharmaceutical giant Pfizer said the first interim results from its large-scale trials found the vaccine to be effective for nine out of ten people who had not been infected before.

It is a far higher efficacy rate than many experts had hoped for – with regulators prepared to accept a vaccine that was just 50% effective.


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