AZ hasn't submitted the paperwork yet and doesn't seem to be in a rush doing that. EMA has said they can do the approval within 3 days or so after receiving the paperwork.
962 karma · joined May 25, 2018
Looking at the phase 1/2 results, the booster shot seems to help a lot in getting the antibody levels up. See Figure 4 of their paper, https://www.nejm.org/doi/full/10.1056/NEJMoa2027906
That's the real problem with the disease, not only the fatality rate and long-term effects, but how quickly and severely it can bring a hospital system and all associated healthcare to its knees.