Saw hubby’s (and my) Onc today. She definitely wants us both to have the booster .... and has said it will be even more effective if you get a DIFFERENT ONE for the booster. So if you had AZ for the first two ... go Moderna or Pfizer for the booster. We will probably have Moderna for the booster as the chemists can do that in our area ... Pfizer is still being held for the youngies.
Double check if you need a letter from the Onc .... or that the recommendation is at least put to your GP in your report .... tho the chemist can access your Meds list via Medicare anyway and see what you are on. It would be Better for peace of mind tho, to have it in writing in case they turn you away!!
take care xx