The Oxford-AstraZeneca data has similar problems, only worse:
Has anyone done any “challenge trials”? That’s when volunteers are first given the vaccine, and then later they’re deliberately exposed to SARS-CoV-2. It would get more results quicker, without having to wait for subjects to encounter the virus in the wild, but deliberately infecting healthy people has obvious ethical complications.
It’s at the challenge stage that there might be cases of ADE. I’ve heard it said that SARS-CoV-2 looks almost booby-trapped for vaccine designers.