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.
He said so during an interview with Sean Hannity. I was watching the show because he was speaking, and was shocked to hear the admission. Can’t find the sound bite but here’s the article:
https://www.deseret.com/2021/4/23/22399234/former-president-donald-trump-americans-coronavirus-vaccine-obama-bush-clinton-carter.
Edit: here’s the video, time stamp 3:30: https://nypost.com/2021/04/19/trumps-urges-americans-to-get-vaccines-takes-shot-at-jj-pause/
It’s not all that easy to find the data to support our claims anymore. Censorship sucks