Covid vaccines and the new strain

Paper man cutout surrounded by Corona Virus and economic news headlines

Covid vaccines and the new strain

Dr. Fred Browne talks about the new strain of covid. How can we really be sure the new strain isn’t already widespread and how do you test for it?
Also, we learn the latest on whether covid vaccine is a one time deal or like a flu shot…once a year.
IMAGE CREDIT: iStock / Getty Images Plus