There is a common belief that doctors are “experts” on vaccines and vaccination. Almost nothing could be further from the truth. The average medical doctor, for example, may not know the names of the ingredients in vaccines, or what they are and how they interact with each other. The average doctor giving people vaccines may not know how vaccines affect the immune system or the central nervous system or the gut microbiome of the intestinal system, or how the effect of vaccines on one of these systems could, in turn, impact one or both of the others.
Read more here: Doctors Are No Experts on Vaccines