Microneedle patches are in development to expand vaccination availability and reduce administration costs. To learn about the future of vaccinations watch: http://blog.ted.com/2013/06/12/vaccines-via-a-patch-mark-kendall-at-tedglobal-2013/
Every country has their own rules about which vaccines you need to take and when. Do you know if you are up-to-date? Please check the calendar for your region!
To learn more about the fight against polio view: http://www.wired.com/polio-vaccine