Individuals with existing health conditions may be more likely to avoid vaccines, and people who refuse vaccines might have pre-existing health conditions that could increase autism risk.

“people who have existing health conditions might actually be more likely to be worried about vaccines and then not get vaccines perfectly happy healthy thriving people usually just go along with status quo they usually don't refuse vaccines so people who are refusing vaccines probably had some pre-existing health condition they didn't control for that did that pre-existing health condition increase risk for or Autism probably”