Are the ingredients in vaccines necessary?
I am not against vaccines and understand the importance of them.
After looking through all of the ingredients in most vaccines, I can’t help but wonder if these are all necessary?
Some vaccines contain ingredients such as aluminum, formaldehyde, chick embryo, bovine extract, calf serum, thimerosal, etc.
I know that each individual vaccine is tested by itself, but how extensive is the research into combining many of the vaccines together or even shortly spaced apart?
This question is in the General Section. Responses must be helpful and on-topic.