I’m not so hot on mixing. It makes it harder to ascertain efficacy. In a metastudy of DC and OK, Pfitzer had a breakthrough rate of 0.17 - 0.2%, so I’m pretty comfortable with 0.2 - 0.3% breakthrough for JJ, given that breakthroughs increase immunity and give the best of both worlds - naturally acquired plus vaccine acquired. I’m curious why the MD would boost already, given that JJ was 3 months lagging the rollout. Boosting with Moderna, at 0.12% - 0.13% would be more logical - for breakthroughs anyway. I guess I’m a vaccine purist :)
links to data at
https://www.livescience.com/breakthrough-infections-different-covid-19-vaccines.html
Another good link...thanks for sharing.