I’m surprised I need to say that autism is not due to parental sin. However, a Catholic priest from India has started preaching about this publicly and I think some people might be confused. I’m going to quote a bit of Fr. Valanmanal, then show that both Church teaching and science say parental sin does not cause autism.
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Autism Is NOT Due to Parental Sin, Fr. Valanmanal

Autism Is NOT Due to Parental Sin, Fr. Valanmanal July 23, 2019 Fr. Matthew P. Schneider, LC CC0 Pixabay I’m surprised I need to say that autism is not …
Carol H
Philosopher, as a medic, you are trained to evaluate ALL associations and ALL correlations; it is how one reaches an educated conclusion. To use an emphatic "NOT" indicates a mind set that is closed to such evaluation. A child is injected - directly into the bloodstream, by-passing the body's natural immunity center in the gut - with a highly invasive FOREIGN solution that have been proven to contain …More
Philosopher, as a medic, you are trained to evaluate ALL associations and ALL correlations; it is how one reaches an educated conclusion. To use an emphatic "NOT" indicates a mind set that is closed to such evaluation. A child is injected - directly into the bloodstream, by-passing the body's natural immunity center in the gut - with a highly invasive FOREIGN solution that have been proven to contain aluminum and mercury that can cross the brain barrier. Within 12 hours, the child has a reaction and is left autistic. Common sense dictates that, regardless of possible preconditions, something of a direct, dramatic and unusual nature triggered this sudden life-changing response. And the only direct, dramatic and unusual thing that happened to our son was the vaccine. As our son's case is one of thousands with the same story, the word "not" has no scientific value; the vaccine is clearly dangerous for certain children.
philosopher
Glad to hear your son is better, Deo gratias but an association, and or correlation is not causation.
Carol H
Twelve hours after our strong, healthy, intelligent baby son received his first round of childhood vaccines, he fell gravely ill and it was touch and go as to whether he would survive. Soon after he developed all the traits of autism: bouts of total withdrawal, self harm (biting himself and banging head on floor/walls), abnormal aggression, ADHD symptoms, and an abnormal fear/nonacceptance of change. …More
Twelve hours after our strong, healthy, intelligent baby son received his first round of childhood vaccines, he fell gravely ill and it was touch and go as to whether he would survive. Soon after he developed all the traits of autism: bouts of total withdrawal, self harm (biting himself and banging head on floor/walls), abnormal aggression, ADHD symptoms, and an abnormal fear/nonacceptance of change. A total detox saved him and eventually gave us back our normal son. This proves he was poisoned. And there is no doubt in our minds that vaccinations are responsible for the epidemic in autism in its varying degrees.