Though vaccination rates are improving and booster shots will soon be available in the U.S., there is still much to be learned about how the coronavirus is evolving.
“We have a higher level of uncertainty now than we’ve had since the spring of last year,” Dr. Howard Forman, professor at the Yale School of Public Health, said on Yahoo Finance Live (video above). “Because there are so many moving parts, we don’t know whether the vaccines are causing waning immunity or rather whether…
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