@Aphrodite @ricci unfortunately its not as easy as that.
it should be, but its not.
knowing when certain vaccinations are available, how often they need to be taken, documenting which have been taken and which havent, the time required out of your day to get them, and what not working that day can mean for your near future, and the stresses of everyday life, and sometimes it just slips through.
not vaccinating your kids is a societal issue, not a personal one.