Its a good and highly pertinent question and my answer is ..as recommended by the manufacturer and the designers ,and accepted by the validating authorities with statutory responsibility for adherence to published standards. These being the trial data used for validation.I'd like to ask a general question to anyone here.
What does 'fully vaccinated' actually mean??
In the case of the Pfizer that is two jabs at a spacing of 4 weeks and then 3 weeks after the second Jab. Other vaccination materials have different regimes.
What is being discovered is that even protection with full vaccination, this wanes in time. How rapidly and to what extent is a matter for conjecture and clinical research.