South African scientists explicitly say that immune pressure, due to high levels of immunity, caused it to favour escape mutations.
And here are the results at last: 19 cases in the vaccine group, 23 in placebo.
Raw data: 22 per cent efficacy, but not significant.
Raw data: 22 per cent efficacy, but not significant.
Note: this is with two doses.
Two thirds mild illness, one third moderate. None serious.
"Data fairly compelling will not protect against mild covid. But will be of some use against severe covid"
"We believe that t cell responses will remain intact...."
"These results are a reality check. We've been somewhat euphoric about efficacy. It is time for us to recalibrate our expectations"