State Health Facts It's possible to look at various health issues by state or to get a 50-state comparison.
From the Kaiser Family Foundation.
WebMedLit This source tracks updates to 23 medical
journals on the web and builds topical views from the combined
tables of contents. The journals are scanned daily and the site is updated as new content appears. Some journals require you to register a username and password but it's free
PubMedCentral New searchable medical journals, some of which go back 150 years.
Medscape Offers a directory of medical topics that are free to access.
Pennsylvania State Data Center Offers demographic, economic, social and housing characteristics for Pennsylvania's municipalities, counties and legislative districts
Diseases and Conditions Extensive coverage from AIDS to von Hippel-Lindau disease with arthritis, cancer, down syndrome, ebola, multiple schlerosis, osteoporosis, tuberculosis inbetween and much more
Diseases and Disorders This is an excellent cataloging of diseases, very dense and the list is deep