Give the child the proper immunizations!

If you, as guardians, are so unorganized to not keep records, have the record tatooed on his buttocks.

Parents like you enable/permit ruebella, smallpox, measles, infantile paralysis, whooping cough, and hepititis.

Given your statement....and back-tracing of your URL....local authorities should take protective custody of the child....and YOU should be expelled from "parenthood." You are a danger to more than your son.