AstraZeneca’s Covid-19 vaccine is 79 percent effective at preventing the disease and does not increase the risk of blood clots, the biotech firm said Monday, following its US phase III efficiency trials.
The shot was also 80 percent effective for the over 65s, it said. Several countries had advised against administering the jab to older people due to a lack of data among elderly participants in previous trials.
More to follow . . .