In 1983, the U.S. Centers for Disease Control and Prevention (CDC) established the National AIDS Hotline (NAH) to address the number of calls concerning the AIDS virus. Since its inception, NAH has grown to be the world’s largest health-related hotline service.

NAH has received an average of more than 1.4 million calls per year since October 1987. Services of NAH include responding to the public’s questions about HIV and AIDS and providing referrals to State and local resources.