3 ms·

I believe the Oxford vaccine does require a booster. It’s the J&J that is single shot.

• deleted 6y ago
  [deleted]
• thinkingemote 6y ago
  Doesn't the Oxford one also has a few medium side effects? Headaches etc?
• abacadaba 6y ago
  Wondering how they determine which need a booster and which don't. Is this based on phase one data or more of an educated guess?
  • SAI_Peregrinus 6y ago
    Phase 1 &2 data. 1 is mostly safety checks, but it involves several dosing profiles (typically starting low) to get a safety profile. 2 tests dose response and more detailed safety. 3 tests efficacy using the dose profile determined by phase 2.