There is an official study just beginning which will gather specific data about protection levels for shots given 12 weeks apart.
There have been reports that giving the second jab at 12 weeks gives better protection after the second jab than if it was given at 4 or 6 weeks but no clinical data to confirm that. The theory is that it kicks the immune system into top gear again, but there is the problem of lower protection until you get the second jab.
The second part of the study will investigate whether a combined or 'shot of each' AZ/Pfizer vaccine will provide better protection by provoking simultaneous responses from different parts of the immune system because the vaccines work differently.
Last edited by: Kevin on Thu 4 Feb 21 at 20:19
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