Derek Lowe has his take on them and I was pleased to see that I basically got it right.
https://blogs.sciencemag.org/pipeline/archives/2020/07/20/new-data-on-the-cansino-vaccine
https://blogs.sciencemag.org/pipeline/archives/2020/07/20/new-data-on-the-oxford-az-vaccine
Next, Wired has a very good article on the need to inject some realism into the discussion by the mainstream media about the vaccines. As they point out, yes we should be encouraged, but we best tone down the hype or we will give the anti-vaxers more ammunition when a sucessful vaccine has some unpleasant side effects. (Which, I hasten to say, is likely a consequence of them being effective in raising an immune response.)
https://www.wired.com/story/covid-19-vaccines-with-minor-side-effects-could-still-be-pretty-bad/