that oaage has an empty h1 tag:
you should add some content to the H1 to improve the sites ranking further.
Also, this site is formatted much better.
on the www.immunizationcenter.org/ site, there is a lot of commenting that may effect the search engines, for example:
<!--$sitebuilder version="2.6" extra="Java(1.6.0_17)" md5="d7b291b08a21c034dbf15751a6a2bed1"$-->
<!--$templateKey Generic|Abstract Flowers - Cream|1.0$-->
there is also no proper doctype declaration, for example:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
all of these things can effect the seo rankings.