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We’re talking about the child of anti-vaccine parents, OP’s friend didn’t say they were anti-vaccine, they said that their parents were so they were not vaccinated as a child.
So, as a friend, OP should try to convince his friend to talk to a doctor about it. People like that are often sheltered from conflicting opinions and may still be reachable.
Maybe, but by the 2nd call the AI would be more time efficient and if there were 20 venues to check, the person is now saving hours of their time.