Like many, you display much knowledge of the branches, but none of the root, regarding the topic of vaccines and virology.
Where is there a toxicology for the measles paradigm? Why is it missing? Don't you realize that industry has an interest here? And that it is influential?
How can measles be studied and known without environmental toxicology being discounted?
Where has the measles virus been properly isolated and characterized? That would require that the tissue samples be toxicologically reviewed, before moving on to virus passsaging, etc. Such toxicology is generally missing from virology.