I'm not sure what you are asking. If you don't get AstraZeneca then you can get a 2 dose mRNA or the 1 dose J&J. If you're asking if you can take 2 mRNA and 1 AstraZeneca or 1 J&J I'd say that's risking sensitization and wouldn't recommend that.Can someone not get the AstraZeneca and then double Pfizer or modena? Or is there not enough testing for that?