MedWorm (www.medworm.com) is a medical RSS feed provider as well as a search engine built on data collected from RSS feeds. From the description on MedWorm’s “About” page:
MedWorm collects updates from over 5000 authoritative data sources (growing each day) via RSS feeds. From the data collected, MedWorm provides new outgoing RSS feeds on various medical categories that you can subscribe to, via the free MedWorm online service, or another RSS reader of your choice, such as Bloglines, Newsgator, Google Reader or FeedDemon.
Search or browse the site for RSS feeds on medical discussions, consumer health news, medical conditions, cancers, infectious diseases, drugs, therapies, or vaccines; browse a directory of blogs by category or use a blog tag cloud to identify posts on popular topics.