https://news.yahoo.com/trump-dismisses-covid-19-booster-184022005.html
It sounds like Trump is now beginning to publicly cast some doubt on the vaccines. He's starting cautiously, by questioning the booster shots, but I suspect (hope) that he will be slowly ramping up the questioning and criticism going forward, from here on out.
That is astonishing. I had thought it was more like .1 to 1 percent. But as the poster below says, the real potential for problems is still down the road. And whoever goes down the road of booster shots, may have a short road ahead. Between the cumulative immediate effects and long term hazards to the immune system in general..... Not good