HIV Basics

Learn the basics of HIV and AIDS, including how to prevent HIV transmission, get tested, start treatment, and live a healthy life with HIV.

U.S. Government Global HIV/AIDS Activities

A number of United States government agencies have come together in the common cause of turning the tide against the HIV/AIDS pandemic. They support a range of activities from research to technical assistance and financial support to other nations to combat the global HIV/AIDS pandemic. These global activities are coordinated with PEPFAR.


The U.S. President's Emergency Plan for AIDS Relief (PEPFAR) is the U.S. government’s response to the global HIV/AIDS epidemic and represents the largest commitment by any nation to address a single disease in history. Thanks to American leadership and generosity, alongside the work of many partners, PEPFAR has saved millions of lives, averted millions of infections, and changed the course of the epidemic.

U.S. Statistics

Learn the facts about how many people have HIV in the U.S., who is at the highest risk, and more.

Global HIV/AIDS Organizations

There are many nongovernmental organizations (NGOs) engaged in the global response to HIV and AIDS. Here are some of the largest NGOs working to prevent new HIV infections and scale up access to treatment and related health services for people living with HIV.

HIV Testing Activities

Supporting Widespread Testing and Timely Linkage to Care

An estimated 1.1 million people in the United States are living with HIV. About one in seven are unaware of their infection. As a result, they are not accessing the care and treatment they need to stay healthy and reduce the likelihood of transmitting the virus to their partners. The National HIV/AIDS Strategy prioritizes widespread HIV testing to reduce undiagnosed HIV infection in order to improve the health of people living with HIV and reduce new HIV infections.

Who Should Get Tested?

Everyone ages 13-64 should get tested for HIV at least once, and some more often. See what’s recommended

Where to Get Tested?

Find an HIV testing location near you.

Types of Providers

Learn about the types of professionals who may be involved on your HIV health care team.

Pre-Exposure Prophylaxis

PrEP is daily medicine that can reduce your chance of getting HIV. Find out if it’s right for you.