February 28, 2011
Unless otherwise noted, the following data are from the CDC HIV Surveillance Report: Diagnoses of HIV infection and AIDS in the United States and Dependent Areas, 2009.
Table of Contents
For more definitions and details about how HIV infection and AIDS data are tabulated, read the "Technical Notes" from the HIV Surveillance Report: Diagnoses of HIV Infection and AIDS in the United States and Dependent Areas, 2009.
For additional details on HIV disease surveillance, view the Kaiser Family Foundation tutorial: Understanding HIV/AIDS Surveillance Data in the United States.
Prevalence is the number of people living with HIV infection at the end of a given year.
At the end of 2006, an estimated 1,106,400 persons (95% confidence interval 1,056,400-1,156,400) in the United States were living with HIV infection, with 21% undiagnosed.1
For more information see "HIV in the United States."
Incidence is the number of new HIV infections that occur during a given year.
In 2008, CDC estimated that approximately 56,300 people were newly infected with HIV in 20061 (the most recent year that data are available). Over half (53%) of these new infections occurred in gay and bisexual men. Black/African American men and women were also strongly affected and were estimated to have an incidence rate than was 7 times as high as the incidence rate among whites. Visit the HIV incidence page for more details.
In 2009, the estimated number of diagnoses of HIV infection in the 40 states and 5 U.S. dependent areas with confidential name-based HIV infection reporting was 42,959. Of these, 42,011 were in the 40 states and 948 were in the 5 dependent areas. In the 40 states, diagnoses of HIV infection among adults and adolescents totaled 41,845 with 31,872 diagnoses in males and 9,973 diagnoses in females, Among children under age 13 years, there were an estimated 166 diagnoses of HIV infection in 2009.
Estimated numbers resulted from statistical adjustment that accounted for delays in reporting to the health department (but not for incomplete reporting) and missing risk factor information, where appropriate.
Because totals for the estimated numbers were calculated independently of the values for the subpopulations, the subpopulation values may not equal the totals.
Of the estimated number of diagnoses of HIV infection in the 40 states with confidential name-based HIV infection reporting in 2009, the distribution of ages at time of diagnosis was as follows:
| Age (Years) | Estimated Number of Diagnoses of HIV Infection, 2009 |
| Under 13 | 166 |
| Ages 13-14 | 21 |
| Ages 15-19 | 2,036 |
| Ages 20-24 | 6,237 |
| Ages 25-29 | 5,951 |
| Ages 30-34 | 5,020 |
| Ages 35-39 | 5,232 |
| Ages 40-44 | 5,519 |
| Ages 45-49 | 4,865 |
| Ages 50-54 | 3,323 |
| Ages 55-59 | 2,004 |
| Ages 60-64 | 900 |
| Ages 65 or older | 736 |
CDC tracks diagnoses of HIV infection information on seven racial and ethnic groups: American Indian/Alaska Native; Asian; Black/African American; Hispanic/Latino; Native Hawaiian/Other Pacific Islander; White; and Multiple Races.
In 2009, the estimated number of diagnoses of HIV infection in the 40 states with confidential name-based HIV infection reporting, by race or ethnicity was as follows:
| Race or Ethnicity | Estimated Number of Diagnoses of HIV Infection, 2009 |
| American Indian/Alaska Native | 189 |
| Asian | 470 |
| Black/African American | 21,652 |
| Hispanic/Latinoa | 7,347 |
| Native Hawaiian/Other Pacific Islander | 34 |
| White | 11,803 |
| Multiple Races | 516 |
|
a. Hispanics/Latinos can be of any race. For more details on HIV infection and race/ethnicity, see CDC's Populations/Surveillance fact sheets. | |
Six common transmission categories are 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).
Following is the distribution of the estimated number of diagnoses of HIV infection among adults and adolescents in the 40 states with confidential name-based HIV infection reporting, by transmission category. A breakdown by sex is provided where appropriate.
| Transmission Category | Estimated Number of Diagnoses of HIV Infection, 2009 | ||
| Adult and Adolescent Males | Adult and Adolescent Females | Total | |
| Male-to-male sexual contact | 23,846 | - | 23,846 |
| Injection drug use | 2,449 | 1,483 | 3,932 |
| Male-to-male sexual contact and injection drug use | 1,131 | - | 1,131 |
| Heterosexual contact* | 4,399 | 8,461 | 12,860 |
| Other** | 47 | 29 | 76 |
|
* Heterosexual contact with a person known to have, or to be at high risk for, HIV infection. ** Includes hemophilia, blood transfusion, perinatal exposure, and risk not reported or not identified. | |||
The distribution of the estimated number of diagnoses of HIV infection among children* in the 40 states with confidential name-based HIV infection reporting, by transmission category, follows:
| Transmission Category | Estimated Number of Diagnoses of HIV Infection, 2009 |
| Perinatal | 131 |
| Other** | 35 |
|
* The term "children" refers to persons under age 13 years at the time of diagnosis. ** Includes hemophilia, blood transfusion, and risk not reported or not identified. | |
At the end of 2008, the estimated number of persons living with a diagnosis of HIV infection in the 40 states and 5 U.S. dependent areas with confidential name-based HIV infection reporting was 682,668. In the 40 states only, this included 660,062 adults and adolescents, and 3,022 children under age 13 years.
Data include persons with a diagnosis of HIV infection regardless of the stage of disease at diagnosis. Estimated numbers resulted from statistical adjustment that accounted for delays in reporting to the health department (but not for incomplete reporting) and missing risk factor information, where appropriate.
Because of delays in reporting of deaths, data are only available through the end of 2008. The exclusion of data from the most recent year allows at least 18 months for deaths to be reported and for these persons to be removed from calculations of persons living with a diagnosis of HIV infection.
Totals include persons of unknown race/ethnicity. Because totals for the estimated numbers were calculated independently of the values for the subpopulations, the subpopulation values may not equal the totals.
In 2008, the estimated number of deaths of persons with a diagnosis of HIV infection in the 40 states and 5 U.S. dependent areas with confidential name-based HIV infection reporting was 17,374. In the 40 states only, this included 16,762 adults and adolescents, and 7 children under age 13 years at death.
Deaths of persons with a diagnosis of HIV infection may be due to any cause.
Data include persons with a diagnosis of HIV infection regardless of the stage of disease at diagnosis. Estimated numbers resulted from statistical adjustment that accounted for delays in reporting to the health department (but not for incomplete reporting) and missing risk factor information, where appropriate. Because of delays in reporting of deaths, data are only available through the end of 2008. The exclusion of data from the most recent year allows at least 18 months for deaths of persons with a diagnosis of HIV infection to be reported.
Totals include persons of unknown race/ethnicity. Because totals for the estimated numbers were calculated independently of the values for the subpopulations, the subpopulation values may not equal the totals.
In 2009, the estimated number of persons diagnosed with AIDS in the United States and 5 U.S. dependent areas was 34,993. Of these, 34,247 were diagnosed in the 50 states and the District of Columbia and 747 were diagnosed in the dependent areas. In the 50 states and the District of Columbia, 25,587 AIDS diagnoses were among adult and adolescent males, 8,647 were among adult and adolescent females, and 13 diagnoses were among children under age 13 years.
The cumulative estimated number of AIDS diagnoses through 2009 in the United States and dependent areas was 1,142,714 Of these, 1,108,611 were diagnosed in the 50 states and the District of Columbia and 34,103 were diagnosed in the dependent areas. In the 50 states and the District of Columbia, 878,366 cumulative AIDS diagnoses were among adult and adolescent males, 220,795 were among adult and adolescent females, and 9,448 were among children under age 13 years.
Estimated numbers resulted from statistical adjustment that accounted for delays in reporting to the health department (but not for incomplete reporting) and missing risk factor information, where appropriate.
Cumulative totals include persons of unknown race/ethnicity. Because totals for the estimated numbers were calculated independently of the values for the subpopulations, the subpopulation values may not equal the totals.
Of the estimated number of AIDS diagnoses in the 50 states and the District of Columbia, the distribution of ages at time of diagnosis was as follows:
| Age (Years) | Estimated # of AIDS Diagnoses, 2009 | Cumulative Estimated # of AIDS Diagnoses, through 2009* |
| Under 13 | 13 | 9,448 |
| Ages 13-14 | 58 | 1,321 |
| Ages 15-19 | 484 | 7,214 |
| Ages 20-24 | 2,095 | 42,920 |
| Ages 25-29 | 3,476 | 129,639 |
| Ages 30-34 | 4,043 | 214,149 |
| Ages 35-39 | 4,893 | 234,575 |
| Ages 40-44 | 5,689 | 193,237 |
| Ages 45-49 | 5,466 | 126,380 |
| Ages 50-54 | 3,983 | 72,327 |
| Ages 55-59 | 2,191 | 39,025 |
| Ages 60-64 | 1,010 | 20,633 |
| Ages 65 or older | 846 | 17,743 |
|
* From the beginning of the epidemic through 2009. | ||
CDC tracks AIDS information on seven racial and ethnic groups: American Indian/Alaska Native; Asian; Black/African American; Hispanic/Latino; Native Hawaiian/Other Pacific Islander; White and Multiple Races.
In 2009, the estimated number of AIDS diagnoses in the 50 states and the District of Columbia, by race or ethnicity was as follows:
| Race or Ethnicity | Estimated # of AIDS Diagnoses, 2009 | Cumulative Estimated # of AIDS Diagnoses, Through 2009* |
| American Indian/Alaska Native | 155 | 3,700 |
| Asiana | 429 | 8,324 |
| Black/African American | 16,741 | 466,351 |
| Hispanic/Latinob | 6,719 | 190,263 |
| Native Hawaiian/Other Pacific Islander | 50 | 839 |
| White | 9,467 | 426,102 |
| Multiple Races | 686 | 12,726 |
|
* From the beginning of the epidemic through 2009. a. Includes Asian/Pacific Islander legacy cases. b. Hispanics/Latinos can be of any race. For more details on AIDS and race/ethnicity, see CDC's Populations/Surveillance fact sheets. | ||
Six common transmission categories are 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).
Following is the distribution of the estimated number of AIDS diagnoses among adults and adolescents by transmission category in the 50 states and the District of Columbia. A breakdown by sex is provided where appropriate.
| Transmission Category | Estimated # of AIDS Diagnoses, 2009 | ||
| Adult and Adolescent Males | Adult and Adolescent Females | Total | |
| Male-to-male sexual contact | 17,005 | - | 17,005 |
| Injection drug use | 3,012 | 1,930 | 4,942 |
| Male-to-male sexual contact and injection drug use | 1,580 | - | 1,580 |
| Heterosexual contact* | 3,832 | 6,561 | 10,393 |
| Other** | 158 | 155 | 313 |
|
* Heterosexual contact with a person known to have, or to be at high risk for, HIV infection. ** Includes hemophilia, blood transfusion, perinatal exposure, and risk not reported or not identified. | |||
| Transmission Category | Cumulative Estimated # of AIDS Diagnoses, Through 2009* | ||
| Adult and Adolescent Males | Adult and Adolescent Females | Total | |
| Male-to-male sexual contact | 529,908 | - | 529,908 |
| Injection drug use | 186,318 | 87,126 | 273,444 |
| Male-to-male sexual contact and injection drug use | 77,213 | - | 77,213 |
| Heterosexual contact** | 72,183 | 126,637 | 198,820 |
| Other*** | 12,744 | 7,032 | 19,776 |
|
* From the beginning of the epidemic through 2009. ** Heterosexual contact with a person known to have, or to be at high risk for, HIV infection. *** Includes hemophilia, blood transfusion, perinatal exposure, and risk not reported or not identified. | |||
The distribution of the estimated number of AIDS diagnoses, among children* in the 50 states and the District of Columbia, by transmission categories was:
| Transmission Category | Estimated # of AIDS Diagnoses, 2009 | Cumulative Estimated # of AIDS Diagnoses Through 2009** |
| Perinatal | 12 | 8,640 |
| Other*** | 1 | 807 |
|
* The term "children" refers to persons under age 13 years at the time of diagnosis. ** From the beginning of the epidemic through 2009. *** Includes hemophilia, blood transfusion, and risk not reported or not identified. | ||
The 10 states or dependent areas reporting the highest number of AIDS diagnoses in 2009 were:
| State/Dependent Area | # of AIDS Diagnoses, 2009 |
| New York | 4,799 |
| Florida | 4,392 |
| California | 3,760 |
| Texas | 2,652 |
| New Jersey | 1,475 |
| Georgia | 1,391 |
| Illinois | 1,202 |
| Maryland | 1,134 |
| North Carolina | 1,088 |
| Pennsylvania | 917 |
| State/Dependent Area | # of Cumulative AIDS Diagnoses Through 2009* | ||
| Adults or Adolescents | Children (<13) | Total | |
| New York | 199,433 | 2,438 | 201,871 |
| California | 160,998 | 696 | 161,695 |
| Florida | 120,701 | 1,577 | 122,278 |
| Texas | 79,568 | 399 | 79,967 |
| New Jersey | 54,483 | 809 | 55,292 |
| Georgia | 39,207 | 253 | 39,460 |
| Illinois | 38,886 | 289 | 39,175 |
| Pennsylvania | 38,282 | 375 | 38,657 |
| Maryland | 35,981 | 332 | 36,313 |
| Puerto Rico | 32,867 | 410 | 33,277 |
|
* From the beginning of the epidemic through 2009. | |||
At the end of 2008, the estimated number of persons living with an AIDS diagnosis in the United States and dependent areas was 490,696. In the 50 states and the District of Columbia, this included 479,161 adults and adolescents, and 707 children under age 13 years at the end of the year.
Estimated numbers resulted from statistical adjustment that accounted for delays in reporting to the health department (but not for incomplete reporting) and missing risk factor information, where appropriate.
Because of delays in reporting of deaths, data are only available through the end of 2008. The exclusion of data from the most recent year allows at least 18 months for deaths to be reported and for these persons to be removed from calculations of persons living with an AIDS diagnosis.
Totals include persons of unknown race/ethnicity. Because totals for the estimated numbers were calculated independently of the values for the subpopulations, the subpopulation values may not equal the totals.
In 2008, the estimated number of deaths of persons with an AIDS diagnosis in the United States and dependent areas was 16,605. In the 50 states and the District of Columbia, this included 16,084 adults and adolescents, and 4 children under age 13 years.
The cumulative estimated number of deaths of persons with an AIDS diagnosis in the United States and dependent areas, through 2008, was 617,025. In the 50 states and the District of Columbia, this included 589,547 adults and adolescents, and 4,949 children under age 13 years at death.
Deaths of persons with an AIDS diagnosis may be due to any cause.
Estimated numbers resulted from statistical adjustment that accounted for delays in reporting to the health department (but not for incomplete reporting) and missing risk factor information, where appropriate. Because of delays in reporting of deaths, data are only available through the end of 2008. The exclusion of data from the most recent year allows at least 18 months for deaths of persons with an AIDS diagnosis to be reported.
Totals include persons of unknown race/ethnicity. Because totals for the estimated numbers were calculated independently of the values for the subpopulations, the subpopulation values may not equal the totals.
For the most up-to-date information on international HIV infection and AIDS statistics, visit the Joint United Nations Programme on HIV/AIDS.
For current statistics on the number of reported AIDS cases in North, Central, and South America, please contact the Pan American Health Organization (PAHO) which is the regional office for the Americas of the World Health Organization at 525 23rd Street, N.W., Washington, D.C. 20037, telephone: 202-861-4346.
Other international Web sites available are the World Health Organization (WHO) and the United States Agency for International Development (USAID).