Who, the World Health Organization, provides a list of upcoming health events, conferences, and summits. Web site available in English, Spanish, and French.
"Listing over 25,000 free books on the Web." Directory of "free books, definitive collections, and serials." Searchable index for texts located on and off-site.
AAAAI, the American Academy of Asthma, Allergy, and Immunology, is a professional organization, with a complete membership list, as well as registration details and up-to-date patient information.
After you sign up for a free account, you have access to a large number of articles from many journals - some full text and others abstracts which you can pay to view the full article.