The overall results of 70.4 per cent efficacy for the Oxford-AZ vaccine is still higher than most flu jabs, which offer protection of 40-60 per cent. a lower amount of the vaccine in a first dose and then the full amount in the second dose were found to be 90 per cent less likely to develop Covid , compared with participants in the placebo group. A possible explanation for the half dose doing better is that this regimen probably mimics the body’s natural response to an infection: a fightback against an infection being led by the first set of antibodies — phagocytes, interferons and cytokines — before a more tailored attack is mounted by the specialised neutralising antibodies — the B-cells and the T-cells. There were no severe cases or hospitalisation in the 23,000 people who got the shot. Unlike the Moderna and Pfizer-BioNTech vaccines , which must be stored/transported at negative 20-80 degrees Celsius, the Oxford-AZ candidate can be stored up closer to normal fridge temperature
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