Vaccines vs. Autism

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Across
  1. 3. Last name of the origin theory’s scientist
  2. 5. A substance used to stimulate immunity to a particular infectious disease or pathogen
  3. 6. A very young child or baby
Down
  1. 1. One of the reasons the original study was proven unreliable
  2. 2. Another word for traits being passed down (starts with a H)
  3. 4. System used to measure the degrees of autism
  4. 7. Is there overlap between autism and vaccines?