Google Co-op is not only refining health search results but offering up pre-approved and reviewed pages and sites, as well as the user option to refine search queries by treatment or symptoms.

To be honest, the announcmenet and service is a little underwhelming. For the time being, this so-called portal is nothing more than just a collecation of search queries at the time being. Therefore, it's not really a portal... not yet.
Google will no doubt invest in this initiative with the goal of being one of the most trusted health destinations on the Internet. The key to success and an aim of Google will be to filter out the unreliable health information and focus on the good information and tools that users want to quickly find.
Read more on Google announces healthcare search clustering ((E-Health Insider))


