There has been a recent increase in the number of children not vaccinated in the United States. PBS' Frontline has investigated this movement, and presents a number of interviews, videos, and discussions covering both sides of the issue.
Visit http://www.pbs.org/wgbh/pages/frontline/vaccines/ for more details.
(lu_lu, “Twitter 365 Day Project - Day 111” 4/21/2009 via Flickr, Creative Commons Attribution.)