[theold]

In mid-November last year Pfizer announced how effective its vaccine was at preventing Covid-19. That number was extraordinary: the vaccine prevented 95 per cent of symptomatic cases in the clinical trial.

The vaccine, as American medical news website Stat put it, “flirted with perfection”. Pfizer CEO Albert Bourla told the publication: “When I heard the over 90 per cent efficacy [following the clinical trials], I felt I was living a dream.”


https://www.stuff.co.nz/national/explain...ons-matter