It isn't in writing anywhere to my knowledge, but doctors who weren't pushing the vaccines that had low percentages of their patients vaccinated complained that their payout rates from insurance companies were very low. They were placed into a lower payout bracket. So they got paid less for the same ICD coding that other doctors who had very high percentages of their clients vaccinated.
Again, not in writing and those stories won't get public recognition. The medical field has been on a slow decline of real "doctoring" for the treatment of symptoms rather than the cause due to pharmaceutical kickbacks. This Rona debacle kicked it into high gear showing just how far doctors would go and how far from their oath they would be willng to deviate in order to save themselves. Not all doctors, but if you have one you trust, I would cherish them. Trust was broken that I don't think I will ever regain for the medical industry.
That's why I am very leary of any vaccination/immunization of any kind.