trust me I know - he's 3 years younger than me and I couldn't wait to be eligible and schedule my appointments, We were kids during the polio epidemic and got first hand views from the Salk vaccine to a time where it was eradicated = can't believe idiot parents who refuse to have their children vaccinated for all those diseases - sorry for a mini rant on this topic. I was thrilled to convince all grandchildren to get theirs.