At the start of 2021, the official CDC definition for a breakthrough covid case was someone who tested "positive" seven or more days after receipt of a primary injection series. On Feb 2, 2021, that definition was changed to only include cases detected at least 14 days after the primary injection series.
"We have revised the case definition," admitted Dr. Marc Fisher, head of the CDC's Vaccine Breakthrough Case Investigation Team, in a letter he sent to his colleagues at the time.
As to the reason for the sudden and unexpected change, it was redacted from said documents, meaning the government does not want the public to know why the change was made..<<<Read More>>>...
