Oxford will release initial data from Stage 3 Covid Vaccine trials tomorrow. The rumours (including supposedly leaked sources) is that the results are very positive and that the vaccine provides not only antibody protection but also T Cell protection (which may indicate a longer protective period). This differs from the Moderna vaccine which just produced an antibody response. Apparently (again rumour until proven or not tomorrow) the vaccine is well on course for Sptember licencing and deployment of the millions of doses that were produced 'at risk'. Apparently it is also safe for immuno-compromised patients too.
Probably the statement from Oxford will just say something along the lines of 'vaccine is safe and creates immune response at both antibody and T Cell level'. Hyperbole isn't a scientist 'thing' however analysts will be reading between the lines (and will probably know the content aready).
If this is indeed positive I expect the markets to react accordingly and I'm happy I have AZN. Of course the results could be that the vaccine turns people into zombies but the intel is that this will be good news.