Statistics Overview

• Diagnosis of HIV infection: The term refers to people diagnosed with HIV infection, regardless of the stage of disease at diagnosis (stage 0, 1, 2, 3 [AIDS], or unknown), from all 50 states, the District of Columbia, and 6 dependent areas (American Samoa, Guam, the Northern Mariana Islands, Puerto Rico, the Republic of Palau, and the US Virgin Islands).
• HIV infection, stage 3 (AIDS): The term refers specifically to people with diagnosed HIV whose infection was classified as stage 3 (AIDS) during a given year (for diagnoses) or whose infection has ever been classified as stage 3 (AIDS) (for prevalence and deaths).
• Transmission category: The term for summarizing the multiple risk factors that a person may have has by selecting the one most likely to have resulted in HIV transmission. For surveillance purposes, people with more than one reported risk factor are classified in the transmission category listed first in a hierarchy of transmission categories, and therefore counted only once. The exception is men who had sexual contact with other men and injected drugs; this group makes up a separate transmission category.
• HIV prevalence: The number of people with HIV at a given time regardless of the time of infection, whether the person has received a diagnosis (aware of infection), or the stage of HIV disease.

For more definitions and details about how HIV and AIDS data are tabulated, read the Technical Notes from the HIV Surveillance Report: Diagnoses of HIV Infection in the United States and Dependent Areas, 2018 (updated); vol. 31.

At the end of 2018, an estimated 1.2 million people aged 13 and older had HIV in the United States,^a including an estimated 161,800 (14%) people whose infections had not been diagnosed.^b

^a In 50 states and the District of Columbia.
^b CDC. Estimated HIV incidence and prevalence in the United States 2014–2018 pdf icon[PDF – 3 MB]. HIV Surveillance Supplemental Report 2020;25(1).

In 2018, 37,968 people received an HIV diagnosis in the United States (US) and dependent areas.^a

^a Includes the 50 states, District of Columbia, and 6 dependent areas of American Samoa, Guam, the Northern Mariana Islands, Puerto Rico, the Republic of Palau, and the US Virgin Islands.

New HIV Diagnoses in the
US and Dependent Areas^a by Age at Diagnosis, 2018

^a Includes the 50 states, District of Columbia, and 6 dependent areas of American Samoa, Guam, the Northern Mariana Islands, Puerto Rico, the Republic of Palau, and the US Virgin Islands.

CDC tracks HIV diagnoses among seven racial and ethnic groups: American Indian/Alaska Native, Asian, black/African American, Hispanic/Latino, Native Hawaiian/Other Pacific Islander, white, and people of multiple races.

New HIV Diagnoses Among Adults and Adolescents in the
US and Dependent Areas^a by Race/Ethnicity, 2018

^a Includes the 50 states, District of Columbia, and 6 dependent areas of American Samoa, Guam, the Northern Mariana Islands, Puerto Rico, the Republic of Palau, and the US Virgin Islands.

^b Hispanics/Latinos can be of any race.

For more details on HIV infection and race/ethnicity, see CDC’s populations and surveillance fact sheets.

CDC classifies HIV diagnoses into six transmission categories to which transmission may be attributed: male-to-male sexual contact, injection drug use, male-to-male sexual contact and injection drug use, heterosexual contact, mother-to-child (perinatal) transmission, and other (includes blood transfusions and unknown cause).

New HIV Diagnoses Among Adults and Adolescents in the
US and Dependent Areas^a by Transmission Category, 2018

^a Includes the 50 states, District of Columbia, and 6 dependent areas of American Samoa, Guam, the Northern Mariana Islands, Puerto Rico, the Republic of Palau, and the US Virgin Islands.
^b Includes infections attributed to male-to-male sexual contact and injection drug use (men who reported both risk factors).
^c Heterosexual contact with a person known to have, or to be at high risk for, HIV infection.
^d People aged 13 and over at the time of diagnosis.
^e Includes hemophilia, blood transfusion, perinatal exposure, and risk factor not reported or not identified.

New HIV Diagnoses Among Children Younger Than 13 Years at the Time of Diagnosis in the US and Dependent Areas by Transmission Category, 2018

^a Includes hemophilia, blood transfusion, and risk factor not reported or not identified.

New HIV Diagnoses Among Adults and Adolescents by Top 10 States, 2018

At the end of 2018, there were 1,040,352 adults and adolescents with diagnosed HIV in the US and dependent areas.^a

Because of delays in reporting of deaths, prevalence data are only available through the end of 2018. The exclusion of data from the most recent year allows at least 12 months for deaths to be reported and for these deaths to be factored into calculations of prevalence.

^a Includes the 50 states, District of Columbia, and 6 dependent areas of American Samoa, Guam, the Northern Mariana Islands, Puerto Rico, the Republic of Palau, and the US Virgin Islands.

In 2018, there were 15,820 deaths among adults and adolescents with diagnosed HIV in the US and dependent areas.^a These deaths may be due to any cause.

^a Includes the 50 states, District of Columbia, and 6 dependent areas of American Samoa, Guam, the Northern Mariana Islands, Puerto Rico, the Republic of Palau, and the US Virgin Islands.

• NCHHSTP AtlasPlus
• NCHHSTP State Profiles
• Statehealthfacts.orgexternal iconprovides state-by-state information about new and cumulative AIDS diagnoses, AIDS diagnosis rates, people with an AIDS diagnosis, AIDS deaths, HIV diagnoses, HIV testing statistics and policies, additional AIDS-related state policies, Ryan White funding and other funding for HIV prevention, and AIDS Drug Assistance Programs, including budget, client, and expenditure data from the Kaiser Family Foundation.

HIV continues to be a serious health issue for parts of the world. Worldwide, there were about 1.7 million new cases of HIV in 2018. About 37.9 million people were living with HIV around the world in 2018. An estimated 770,000 people died from AIDS-related illnesses in 2018. An estimated 35 million people have died from AIDS-related illnesses since the start of the epidemic. Sub-Saharan Africa is the region most affected by HIV and AIDS worldwide. Other regions significantly affected by HIV and AIDS include Asia and the Pacific, Latin America and the Caribbean, and Eastern Europe and Central Asia.

CDC’s Global HIV website explains what CDC is doing in countries where HIV and AIDS have had great impact.

Other resources for international HIV and AIDS statistics:

• For information on international HIV infection and AIDS statistics, visit the Joint United Nations Programme on HIV/AIDSexternal icon.
• For current statistics on the number of reported AIDS cases in North, Central, and South America, please contact the Pan American Health Organization (PAHO)external icon, which also serves as the Regional Office for the Americas of the World Health Organization at 525 23rd Street, N.W., Washington, D.C. 20037; telephone: 202-974-3000.
• Other international websites with information on HIV and AIDS are the World Health Organization (WHO)external iconand the United States Agency for International Development (USAID)external icon.