@Joseph You’re reading the statistics wrong. I’m not sure if you’re doing this in-character, or you’re honestly unclear about the situation. Irregardless, there are probably people who believe as you do with misleading statistics.
For a person that has measles, they are far more likely to end up in the hospital than a person with the cold or flu. And the less people that vaccinate, the more likely someone from a family that does vaccinate will get the disease. That’s why anti-vaxxers and their apologists (“I personally vaccinate, but I understand bla bla bla…”) are a danger to us all.