clinics are going fast. it s here from the privacy of a georgia s pediatrician office. all done. it s a game changer for us. reporter: .to a large houston hospital clinic. going to be super fast, okay? reporter: .thousands of paents across the country took their children tote get vaccine on the first day it became available for 5-7-year-olds. he has a condition we re worried about and now he s vaccinated. it s a relief. reporter: the children s version is a third of what older aged children get with orange needles and distinctive orange packages. millions of doses were on their way to hospitals, clinics, and pharmacies awaited sign-off from the c.d.c. while some children quickly received shots, nearly a third of parents in one survey say they won t vaccinate their child. for my kids, i probably upon opt to not get the vaccine immediately like i did for myself. reporter: doctors hope hesitant parents will talk to them first. we can get most kids in now, and then get