Who is at risk for HIV?

Last reviewed: September 21, 2026

Anyone can acquire HIV through a relevant exposure; identity alone does not determine risk. The source’s HIV status and viral load, exposure route and prevention measures matter. Maintaining viral load below 200 copies/mL on ART prevents sexual transmission. Access to testing, prevention and care is shaped by social and economic conditions.^{[1][3][6][11]}

What actually creates risk

CDC's page on how HIV spreads is organized around risk factors, not categories of people. Most people acquire HIV through anal or vaginal sex, or by sharing needles, syringes, or other drug injection equipment such as cookers^[1]. Either partner can acquire HIV during anal or vaginal sex; being the receptive partner in anal sex carries a greater likelihood than being the insertive partner^[1].

Viral load and another STI can affect HIV risk during an exposure without effective prevention. An STI alone does not transmit HIV, and an STI does not undo U=U when viral suppression is maintained. Pregnancy, birth and breastfeeding are additional routes requiring their own prevention and care plans.^[11][1]

Treatment prevents sexual transmission when viral load stays below 200 copies/mL and reduces risk through other routes. A zero-risk finding for sex should not be extended to syringe sharing or breastfeeding. The U.S. blood and transplant supplies are screened, making transmission through them very unlikely; donating blood does not transmit HIV to the donor. A workplace injury involving a contaminated needle or sharp object needs immediate assessment.^[11][1]

Factors, groups, and an ongoing framing tension

CDC's own transmission page uses factor-based language, and CDC's stigma materials go further: CDC lists believing that only certain groups of people can get HIV as an example of HIV stigma, alongside making moral judgments about people who take steps to prevent HIV and feeling that people deserve HIV because of their choices^[2]. CDC's health equity page repeats that list and adds discrimination examples such as asking whether someone is "clean," or assuming someone has HIV because of their identity or behaviors^[3].

Population data can help direct prevention funding and services, while individual assessment focuses on exposure, prevention and care. HIV.gov describes differences in HIV burden among communities. Those differences do not justify assuming that a particular person has HIV or that someone outside a named group cannot acquire it.^[4][2][3]

There's a practical reason to care. CDC's clinical testing guidance states that HIV crosses the boundaries of sexual orientation, sex, age, and ethnicity, and that risk-based screening may fail to identify some people with HIV — including women, members of minority races and ethnicities, people outside urban areas in low-incidence regions, people under 20, and heterosexual men and women who are unaware of their likelihood of acquiring HIV. CDC recommends routine opt-out screening in part because it removes the stigma associated with HIV testing^[5]. Sorting people into "at risk" and "not at risk" buckets misses people, and it also stings: CDC notes that stigma discourages people from engaging in HIV testing, prevention, and care, and that internalized stigma can lead to shame, fear of disclosure, isolation, and despair^[3].

The conditions that shape exposure

CDC defines social determinants of health as the non-medical factors that influence health outcomes — the conditions in which people are born, grow, work, live, and age — plus the wider set of forces and systems shaping daily life, explicitly including racism and systems such as economic policies, social norms, and political systems^[6]. CDC connects HIV and related infections to age, income, employment, and housing, and notes these often result in disparities by race and ethnicity, gender identity, sexual orientation, and geography — framing health inequities as stemming from unfair and unjust systems, policies, and practices^[6].

CDC's Fast Facts names the social and structural issues that continue to drive inequities: HIV stigma, homophobia, discrimination, poverty, and limited access to high-quality health care. It also names barriers to reaching an undetectable viral load — food insecurity, unemployment, and unstable housing or homelessness^[7]. These are not personal failings; they are conditions, and conditions can be changed by policy and funding.

Incarceration is one clear example. More than 5 million people are estimated to be under the supervision of U.S. adult correctional systems. In 2021, about 1.1% of people incarcerated in state and federal prisons were known to be living with HIV — roughly three times the prevalence in the general U.S. population. CDC also notes that a high proportion of people with justice system involvement have a history of unstable housing and mental health and substance use disorders, which increases vulnerability^[8].

What the 2024 data show — as context, not a definition

CDC’s provisional 2024 release, published in May 2026, counted 38,793 diagnoses at age 13 or older in the United States and seven territories and freely associated states. Male-to-male sexual contact accounted for 25,129 (65%), Black/African American people for 15,128 (39%), the South for 19,785 (51%), and injection drug use alone for 2,426 (6%). The diagnosis rates of 13.3 overall and 42.2 among Black/African American people per 100,000 apply to the U.S. population. Diagnoses are not the same as infections newly acquired that year.^[9]

These figures help identify where services are needed; they do not determine an individual’s status. For historical context, CDC’s April 2024 Fast Facts summary reported a 12% decline in estimated new infections from 2018 to 2022, alongside a 5% increase in diagnoses attributed to injection drug use over that period. It counted 928 diagnoses among transgender people in 2022, about 2% of 37,981 diagnoses in the U.S. and six territories and freely associated states. Those are older reporting-period figures, separate from the provisional 2024 release.^[3][7]

Routine testing helps reach people who do not recognize a possible exposure. CDC recommends at least one HIV test for everyone aged 13–64, with repeat testing for ongoing risk and testing during pregnancy. Knowing your status makes it possible to connect with appropriate treatment or prevention.^[5]

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