Pfizer Inc is betting that its coronavirus vaccine candidate will show clear evidence of effectiveness early in its clinical trial, according to the company and internal documents reviewed by Reuters that describe how the trial is being run.
Results By End of October?In recent weeks, Pfizer has said it should know by the end of October whether the vaccine, developed together with Germany’s BioNTech SE, is safe and effective. If the vaccine is shown to work by then, Pfizer has said it would...
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