THE SCIENCE CHANGES: CDC: Some of you should wait longer before getting your second vaccination. “And while we’re on the subject of insufficient data, how is it that we’re only now learning about immunity fading more quickly if the initial two shots are spaced more closely together? Didn’t they test for that during the initial trials? We’ve been listening to the CDC sound the alarm bells for the past year about how people’s immunity wasn’t lasting as long as originally predicted so perhaps we needed to shorten the time before people need a booster shot. Is it possible that the immunity levels are falling too quickly specifically because they were telling everyone to get the second shot too soon?”