COVID Vaccines That Require 2 Doses Create New Set Of Challenges

Video Credit: WBZ CBS Boston
Published on November 30, 2020 - Duration: 02:27s

COVID Vaccines That Require 2 Doses Create New Set Of Challenges

Experts are actively trying to trouble-shoot these logistical problems before vaccines become available.

WBZ-TV's Dr. Mallika Marshall reports.


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