Covid vaccine: Why is AstraZeneca making so many unforced errors?

The has been communication of scientific results. November data from trials in the U.K. and Brazil generated confusion over efficacy. This week, there were doubts over a subsequent trial in the U.S. and South America that was supposed to clear up the question.

from Healthcare/Biotech-Industry-Economic Times https://ift.tt/2NPuHee
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