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HIV & Aging Clinical Recommendations
We recommend routine, opt-out screening for HIV infection in all adults, including those over the age of 65. As described below, HIV screening based on identification of risk factors alone is not effective, especially since older adults may be more likely than the general population to have unrecognized risks, and are therefore more likely to present late in the course of infection with HIV/AIDS. Since early initiation of antiretroviral therapy is critical to successful treatment, and routine screening is more effective than risk-based screening in identifying HIV earlier in older adults, we recommend that all adults regardless of age should be screened for HIV.
The number of older adults with HIV/AIDS is increasing, partly because people with HIV/AIDS are living longer. According to the Center for Disease Control and Prevention (CDC), from 2010 to 2013, the number of adults over the age of 50 living with HIV increased from 301,970 to 395,668 with individuals ages 50-54 years old making up the majority (41%) of HIV positive older adults (CDC 2017e). By the end of 2014, adults over the age of 50 represented approximately 46% (437,671) of all individuals living with HIV in the US (CDC 2015c). Additionally, there has been a continued lack of attention to the rate of new infections in older adults. In 2014, 17% of the 44,073 newly diagnosed HIV infections in the US were in those 50 years and older, and 44% of those were between the ages of 50 and 54 (CDC 2017f). While the prognosis for newly diagnosed HIV positive individuals has improved amongst most age groups, this has not necessarily been the case for older adults. In 2013, a disproportionate percentage of older adults (37.7% ) were diagnosed with stage 3 AIDS at time of HIV diagnosis (CDC 2017e).
Detecting HIV in older adults is not only important because of the increased prevalence amongst older adults, but also because older adults are more likely to present late, with greater associated mortality (Chadborn 2006). A UK study found that 48% of older adults were late presenters vs 33% of younger adults (Smith 2010; Althoff 2010a). Older adults in this study were 14 times more likely to die within a year of diagnosis compared with older adults who were not diagnosed late. Another UK study of 63,805 adults diagnosed with HIV, showed that older adults derived greater absolute risk reduction and mortality benefits with early initiation of ART therapy than their younger counterparts making early detection and treatment essential (Davis 2013). One of the main reasons for late diagnosis is the lack of awareness by both patients and providers.
Screening for HIV/AIDS requires awareness of risk factors, which may be different in older adults. In contrast to younger adults, the main risk factor in older adults is heterosexual intercourse, though the route of HIV infection is often unknown (Grabar 2006; Martin 2008; Sherr 2009). There are however differences based on gender, with 67% of men over 50 years old contracting HIV by male-male sexual contact, 20% heterosexual contact, and 10% injection drug use, as compared to women with 85% by heterosexual contact and 15% by injection drug use (CDC 2017e). Older women may be at increased risk of HIV due to age-related vaginal thinning and dryness, and also because older women starting a new sexual relationship after many years of being in a monogamous relationship may find it difficult to initiate discussions about risks and the use of condoms (CDC 2017f). Older women may also find it difficult to self-advocate for condom use due to sexism and power differentials within their relationships (Altschuler 2015). Additionally, increasing prevalence of erectile dysfunction as men age may make condom use less desirable and even more challenging, while the availability of medication to treat erectile dysfunction may also allow for increased sexual activity in older men (Jones 2013).
Minority races/ethnicities may also have increased risk factors (Zingmond 2001; Linley 2012). Blacks/African Americans continue to be the most disproportionately affected race/ethnicity with rates of new HIV infections being 2 times that of Hispanics/Latinos and 8 times that of whites (CDC 2017e). Older adults who are lesbian, gay, bisexual or transgender (LGBT) are an additional group at increased risk, especially men who have sex with men, who account for just over half of all new HIV infections (CDC 2017e). Older LGBT adults are often invisible to the health care profession for multiple reasons, which can further impair effective communication and reduction of risk (Grossman 1995; Simone 2011).
Barriers to effective prevention and detection include:
Providers must work to address the barriers to effective screening and discussions regarding HIV prevention. Communication between health care providers and their older patients in regards to topics such as safer sex methods is critical. Providers must use medical histories that include questions regarding older adults’ sexual behavior, sexual orientation, and substance use. Additionally, provider endorsement of HIV testing should not be underestimated as it is associated with higher rates of screening (Craig 2012). Removing unnecessary barriers to testing, such as the need for written consent, also improves screening rates (Nayak 2012). Providers should not only have a lower threshold to screen for and consider the diagnosis of HIV in older patients, but they must also engage patients of all ages in discussions about sexual health and risk prevention. (see Sexual Health section).
The CDC recommends voluntary, routine opt-out HIV screening for all adults age 13-64, regardless of risk factors (CDC 2006). Those with known risk factors should have repeat HIV screening at least annually. These guidelines discourage screening based solely on risk factors, because targeted testing in the general population on the basis of risk behaviors alone fails to identify a substantial number of persons who are HIV infected (CDC 2006). In 2013, the U.S. Preventive Services Task Force updated their screening recommendations, and similar to the CDC, recommend routine screening for all adolescents and adults age 15-65 (grade A recommendation) (Moyer 2013). These recommendations unfortunately provide a cut-off at 65 years old, at which point routine screening is no longer recommended, despite the fact that older adults and providers are unable to correctly identify risk factors for HIV infection (Henderson 2004; Skiest 1997). Analyses of HIV screening in older adults show that one-time routine screening of adults up to the age of 75 may also be cost-effective (Sanders 2005).
Given that the cost and risk of physical harm from an HIV test is much less than other established screening tests (e.g. colonoscopy), and since the potential benefits of earlier detection are great, we recommend routine screening of all older adults. Routine screening is more effective than risk-based screening, perhaps even more so in older adults, where providers and patients are less likely to identify risks for HIV infection. In addition to the public health benefit of reduction in HIV transmission in older patients, routine screening may also improve individual outcomes as a result of earlier treatment (the treatment of HIV/AIDS in older adults is discussed separately in this document). Unlike most screening recommendations in the elderly which should account for the individual’s functional status, comorbidities, and predicted life expectancy, we recommend routine testing of all older patients, regardless of age or individual factors, since effective and acceptable treatment options exist, and routine detection would reduce further transmission of HIV in the older population.
CDC. (2016a, May). Diagnoses of HIV infection among adults aged 50 years and older in the United States and dependent areas, 2010–2014 – cdc-hiv-surveillance-supplemental-report-vol-21-2.pdf. Retrieved January 31, 2017, from https://www.cdc.gov/hiv/pdf/library/reports/surveillance/cdc-hiv-surveil...
Simone, M. & Appelbaum, J., 2011. Addressing the Needs of Older Lesbian, Gay, Bisexual, and Transgender Adults | Clinical Geriatrics. Available at: http://www.clinicalgeriatrics.com/articles/Addressing-Needs- Older-Lesbian-Gay-Bisexual-and-Transgender-Adults