No, there is no link between vaccinations and autism.
This idea first came about in 1998 when a study was published by Andrew Wakefield that said there was a link between MMR and autism - this study was shown to be completely fraudulent, however many people today continue to believe this due to people pushing pseudoscience to further their own causes, such as to spread fear about vaccinations or autism, or to sell expensive autism treatments to parents, or simply out of ignorance.
Autism is a neurological difference, as the brain is formed within the womb common sense dictates that vaccines cannot cause autism - a vaccine cannot change the brain, nor can it go back in time to change a babies development within the womb.
Infantile Autism is when a baby or toddler (an Infant) has autism.
Autism is a neurological difference, as such you are born autistic and you cannot become autistic. Autism and vaccinations are completely unrelated.
The exact same percent as children that have been vaccinated. There is absolutely no link what-so-ever between vaccinations and Autism, a child is born Autistic and vaccinations cannot time-travel to change the childs development in the womb or change it's parents genes.
Autism is believed to be genetic, it's more strongly linked to the father but can be a result of both parents genes. There are theories that Autism is not just linked to specific genes but to pairs of genetic mutations from both parents, that when paired result in Autism.
The mutation that causes Autism is a rare genetic mutation. There are three different genes that are linked to the cause of different disorders on the Autism Spectrum.
While high lead levels are linked to mental retardation and central nervous system damage in infants and children, they have not been specifically linked to autism.
Not that Ive heard or seen.
It's not that MMR is unlikely to cause autism, it cannot cause autism full-stop. Autism is a neurological difference so it occurs within the second trimester of pregnancy when the brain is being formed, no vaccination can cause autism. Billions have been wasted on thousands of research projects to prove that there is absolutely no link between autism and vaccinations.
It is believed that some Vaccinations can affect brain growth, giving children Autism. However, I do not believe this one bit, but that's just my opinion. If you have any questions about Autistic Children then email me at ijm9098@gmail.com I have tons of experience with Autistic children.
Birthrate
No, Autism isn't linked to pre-birth epidural.Autism is a neurological difference, like with Neurotypical people it develops as the brain develops during the second trimester and is as a result of genetic factors.
You can currently get religious exemptions in every state, and philosophical exemptions in some. Otherwise, yes.