Indian Health Service

Site of the Federal health program for American Indians and Alaska natives. Includes information about medical programs, offices, facilities, resources and more.

http://www.ihs.gov/

CDC National Prevention Information Network - NPIN

Provides information on prevention of HIV, AIDS, hepatitis, STDs, TB and more. Includes separate section of web communities.

http://www.cdcnpin.org/

NSF International

Non profit organization involved in standards development, product certification, education, and risk-management for public health and safety.

http://www.nsf.org/