Burlington Free Press issued the following announcement.
“We have been using the measles vaccine since the late 1960s, and the virus hasn’t changed. That’s why we have been able to eliminate measles in the U.S.,” said Dr. John Swartzberg, a professor emeritus of infectious diseases at the University of California, Berkeley. The coronavirus “is able to change and drift from that protection we have. That’s a major reason why we’re seeing problems with these vaccines."
Original source can be found here.
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