The thinking behind it is different vaccines provoke different parts of the immune system  the main substances being antibodies and T cells. Ms Bingham said: 'You'd do a prime with one vaccine, as in your first jab would be with one vaccine format, and then the second  whether it's 28 days or two months, or whatever the agreed period would be  would be with a different vaccine. 'Antibodies block the uptake of viruses into cells, and the T cells identify those cells that have been infected and then take them out, so you ideally want to have both. Scientists on the country's Vaccine Taskforce yesterday said they would trial giving people a dose of one type of jab and then a booster with a different type. Each vaccine is different, however, and the trial results are different as well, which may affect how long regulators want to spend looking at a jab.
A further vaccine is necessary to further protect people from injection.
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A further vaccine is necessary to further protect people from injection .
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