A vaccine against Covid-19 is in sight, with the announcement of the first interim results in large-scale trials showing the Pfizer/BioNTech candidate is 90% effective, according to the manufacturers.
Their analysis shows a much better performance than most experts had hoped for and brings into view a potential end to a pandemic that has killed more than a million people, battered economies and upended daily life worldwide.
The company says there have been no serious side-effects while the high percentage of those protected makes the findings especially compelling…
