Since the vaccine may change DNA, and the dna of your hair follicles last 2-7yrs . I have been collecting some hairs and been trying to find a Genetic Place that would be willing to test my hair and tell me the the potential DNA difference of new and old hairs.
That sounds like an interesting study. The statistics based on a sample size of one will be insignificant but the idea is still good. Perhaps others would be interested in increasing the sample size to see the impact.
What a great idea. Let us know if you find anything out. Very interested.