"This morning, serious people are asking about the decision to pause the use of the J&J vaccine when six out of 7 million people who received the vaccine have had an adverse reaction," CNN's John Berman said, introducing John Avlon's Reality Check segment. "We're in a race between the covid-19 variants and the vaccines, which is why it was surprising to hear the Johnson & Johnson's was put on pause while the FDA and CDC look at blood clots," Avlon said.