When the parent of a pediatric patient tells you, “we don’t believe in immunizations” do you even try anymore? Has anyone ever convinced them otherwise? Anyone else ever been in trouble for questioning a parents actions (or inaction)?
They’re not likely to change their mind in one visit, but you can plant a seed if you don’t alienate them by coming across as critical. You can discuss other ways of protecting the child from illness such as breastfeeding & avoiding daycare. You do what you can & that’s all you can do.
I used to try, armed with facts, to correct their nonsense. Lately, I’ve given up. Some people will always believe that the first Lunar landing was staged, believe in Bigfoot, or believe that immunizations would harm their child. Maybe a raging case of Polio will convince them.