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Before you break out the New Year's champagne to celebrate the miracle vaccines and the end of the pandemic -- according to this interview with Pfizer VP, they don't even know if their vaccine will prevent infection or transmission. So it's "highly effective" at what?? How will the vaccine create herd immunity if it doesn't prevent infection or transmission?
www.medpagetoday.com
Dormitzer: So the answer is we don't yet know if it prevents infection and will prevent spread.

What Do We Really Know About Pfizer's New COVID Vax?
Answers from Pfizer exec Phil Dormitzer