HIV was a gift to the Christian right and now that medication has been so successful, things like HPV make up a larger part of what they have left. Helping parents misuse their small power in general but extreme power over their children also plays into the hands of people wanting the corruption of power over truth.
You are not correct according to Reuters.
"The new schedule also recommends U.S. children receive a single dose of human papillomavirus (HPV) vaccine, rather than a two-dose course. Recent studies have concluded that a single dose is not inferior to the longer course and noted the World Health Organization also backs a single dose schedule."
https://www.reuters.com/business/healthcare-pharmaceuticals/...