Review | Published:

Seeking wider access to HIV testing for adolescents in sub-Saharan Africa

Pediatric Research volume 79, pages 838845 (2016) | Download Citation

Abstract

More than 80% of the HIV-infected adolescents live in sub-Saharan Africa. Acquired immune deficiency syndrome (AIDS)-related mortality has increased among adolescents 10–19 y old. The impact is highest in sub-Saharan Africa, where >80% of HIV-infected adolescents live. The World Health Organization has cited inadequate access to HIV testing and counseling (HTC) as a contributing factor to AIDS-related adolescent deaths, most of which occur in sub-Saharan Africa. This review focuses on studies conducted in high adolescent HIV-burden countries targeted by the “All In to End Adolescent AIDS” initiative, and describes barriers to adolescent HTC uptake and coverage. Fear of stigma and family reaction, fear of the impact of a positive diagnosis, perceived risk with respect to sexual exposure, poor attitudes of healthcare providers, and parental consent requirements are identified as major impediments. Most-at-risk adolescents for HIV infection and missed opportunities for testing include, those perinatally infected, those with early sexual debut, high mobility and multiple/older partners, and pregnant and nonpregnant females. Regional analyses show relatively low adolescent testing rates and more restrictive consent requirements for HTC in West and Central Africa as compared to East and southern Africa. Actionable recommendations for widening adolescent access to HTC and therefore timely care include minimizing legal consent barriers, healthcare provider training, parental education and involvement, and expanding testing beyond healthcare facilities.

Main

Adolescents 10–19 y old have recently received increased global focus for targeted HIV research and programming. Between 2005 and 2012, AIDS-related deaths fell by 30% among the global people living with HIV (PLHIV) population (1); however mortality rose by 50% among adolescents living with HIV (ALHIV) (1,2). Globally, in 2013, an estimated 120,000 AIDS-related deaths occurred among adolescents aged 10–19 y, with 110,000 (nearly 92%) of these deaths occurring in sub-Saharan Africa (3). This represents a significant rise in global adolescent AIDS deaths from 71,000 in 2005 (4).

AIDS is the number one killer of adolescents in Africa (5,6). To control the impact of AIDS on the lives of adolescents living in sub-Saharan Africa, early detection and treatment as well as the prevention of new infections are important. With respect to new infections, female adolescents are of particular concern. In 2013, approximately 65% of all new adolescent HIV infections were among girls, largely in sub-Saharan African countries (3,6). Of the 1.7 million African ALHIV, an estimated 1 million (nearly 60%), are female (7). In countries such as South Africa, Sierra Leone and Gabon, girls represent more than 80% of new HIV infections in adolescents (4,8). Regardless of gender, the vast majority of African adolescents, including those already infected with HIV, do not know their HIV status (3,6). The rates of HIV testing among adolescents range from a low of 1% in Congolese males to 44% in Malawian females, with a 16.4% average testing rate between 18 high-burden African countries (8). Limited access to HIV testing and counseling (HTC), leading to late or limited access to quality care have been cited by the World Health Organization (WHO) and UNAIDS as a causative factor in the increase in ALHIV mortality over the past decade (6,9). Therefore, low rates of testing, especially in the highest adolescent HIV-burden countries should be evaluated, and barriers to wider access to testing-and therefore to early treatment and treatment-as-prevention- should be effectively addressed.

In February 2015, the United Nations launched the “All-In” initiative to end Adolescent AIDs, which aims to reduce new adolescent infections by 75%, to reduce AIDS-related mortality by 65%, and to achieve zero discrimination by 2020 (8). Of the 25 “All In” countries that represent 90% of deaths and 85% of new infections in adolescents, 18 (72%) are in sub-Saharan Africa (8). “All In” aims for at least 90% of ALHIV to know their status, and part of the approach is to advocate for wider adolescent access to HIV testing at the country level using strategic information relevant to this population (8). Unfortunately, without concentrated efforts, sub-Saharan Africa may be left behind and may not meet this target by 2020. This review highlights region-specific adolescent HIV studies and discusses challenges in, and opportunities for providing wider access to timely HTC services for adolescents in sub-Saharan Africa.

Uptake of Adolescent HIV Testing and Counseling in Sub-Saharan Africa

In 2007, the WHO recommended provider-initiated testing and counseling (PITC) as an opt-out approach to HTC, where healthcare workers provide testing as part of routine medical care or clinical management unless the client declines (10). This was in contrast to the client-initiated voluntary counseling and testing, where the client proactively seeks HIV testing on their own. The goal of the PITC strategy is to increase opportunities for HIV testing and diagnosis, especially in high-burden areas with low testing rates. With the PITC guidelines came a recommendation to governments “to develop and implement clear legal and policy frameworks” to address issues of consent and assent for minors including adolescents (10). Even for client-initiated voluntary counseling and testing, issues of consent and assent remain for adolescent minors, and therefore the presence of clear, well-communicated legal policies play a critical role in HTC scale-up among adolescents.

By 2010, 42 African countries, including all 18 All-In African countries, had adopted a PITC policy, however, the PITC policies were not universally applied across all populations in all countries (11). The main population targeted was pregnant women, and by 2010, only 31 of the 42 countries offered PITC to all adults, and PITC was offered to infants of HIV-positive mothers, children on admission or in feeding centers in only 10 countries (11).

Table 1 shows rates of HIV testing among adolescents who also received their results in the 18 All-In African countries, using the most current available data between 2009 and 2014. Among girls, the lowest rates were in Nigeria (4%), the Democratic Republic of Congo (DRC) (5%) and Côte d’Ivoire (10%), while the highest rates occurred in Uganda (31%), Lesotho (33%), and Malawi (44%). For boys, testing rates were lowest in the DRC (1%), Nigeria (2%), and Côte d’Ivoire (5%) and highest in Swaziland (18%), Malawi (21%), and Rwanda (24%) (8). These data reveal that the lowest HIV testing rates among adolescents are occurring in West and Central African (WCA) countries, while the highest rates are in East and southern African (ESA) countries. It is possible that the relatively lower rates of adolescent HTC in WCA countries stem from the prevalence and/or type of epidemic in that region. Adult HIV prevalence in WCA countries (median 1.6%) is generally lower than in ESA countries (median 6.3%) (12). Furthermore, in contrast to ESA’s generalized epidemic, WCA presents more of a mixed (both generalized and concentrated) epidemic within countries (13). This may make it more complicated to locate and test HIV-infected individuals, and therefore result in lower HTC coverage. Regardless, none of the adolescent HTC rates in any African country approximate the 90% target that the All-In initiative aims for. While also falling short of the 90% benchmark, reported adult (15–49 y) HTC in the All-In countries have been higher than that of adolescents. Drawing on data current between 2010 and 2013, adult HTC rates were 12.6, 13.2, and 17.1% in Côte d’Ivoire, DRC, and Nigeria, respectively; higher values of 59.3% were reported from Uganda, 63.8% from Botswana and 51.2%/71.6% (in males/females) from Malawi (14). Similar to the adolescent group, WCA adults are experiencing the lowest HTC rates while those in ESA countries are experiencing relatively higher rates. The WHO PITC, Adolescent Testing and Consolidated HIV Testing Service guidelines make testing recommendations for all populations in low-level, concentrated and generalized epidemics, but not specifically for mixed concentrated-generalized epidemics (9,10,15). All populations are to be offered PITC in generalized epidemics, and key population adolescents are to be offered testing in all epidemic type settings (9,10,15). Testing services with linkage to care are to be made accessible for adolescents in concentrated and low-level epidemic settings (9,15). All three documents strongly recommend revision of age of consent policies to increase independent access to HTC for adolescents.

Table 1: HIV statistics among adolescents in sub-Saharan Africaa,b

Willingness to Test and Barriers to HIV Testing and Counseling Among Adolescents in Sub-Saharan Africa

Studies show that the desire to be tested for HIV among adolescents is relatively high. A WHO study combining data from workshops among 98 adolescents in the Philippines, South Africa and Zimbabwe with an online survey of 655 participants from 92 countries indicated that approximately two-thirds of untested adolescents desired an HIV test (16). The WHO study included 13 of the 18 All In African countries. Individual country studies and surveys also indicate strong desire to test: between 47.8 and 85.5% of adolescents and youth want to be tested for HIV in West/Central (17,18,19,20), East (18,21,22,23), and southern Africa (24,25,26). The proportion of adolescents willing to test differed within and between some countries with respect to factors including gender, geographical residence, socio-cultural norms, and HIV knowledge and risk perception of participants. Overall, the proportion of adolescents willing to test was higher in later vs. earlier-conducted studies.

Given the low HTC rates, it appears that adolescents’ willingness to be tested is not matched by their HTC uptake, and factors reducing access to testing need to be elicited and addressed. The WHO adolescent HTC study evaluated barriers to HTC, categorizing them into personal, social, cultural, or service-related (16). The most frequently expressed barrier to HTC among untested adolescents was fear, including fear of needles, parents’ reaction to a positive result, AIDS-related illness, stigma/discrimination, and death (16). Interestingly, while ~20% of respondents expressed fear as a barrier, this proportion rose to ~53% among the African adolescents (16), suggesting that addressing multiple sources of fear (for example, debunking myths and exaggerations of truth with education and counseling) among African adolescents may be important to overcome barriers to testing. Other major barriers identified in the WHO study were the impact of a positive diagnosis, association of HTC with bad or high-risk behavior, lack of information, perceived risk with respect to sexual exposure, denial, poor attitudes of healthcare providers (poor confidentiality, insensitivity, and being judgmental), difficulty accessing testing services (transportation, cost, long waiting times, service hours), and parent/guardian consent requirements (16). Other studies conducted across sub-Saharan Africa corroborate with the WHO study with respect to barriers to adolescent HTC (18,20,22,23,24,26,27,28,29,30,31,32). These studies identified major barriers as fear of a positive test, especially among those sexually active, and fear of stigma and discrimination, including being ostracized by friends and family. Fear of loss of current or future partners, and the potential psychological impact of these consequences, including depression and suicide, were also expressed by African adolescents (22,23,24,26,28,30,32).

Due to its legal implications, and likely wide cross-regional and country variation, age of consent for HTC amongst minors under age 18 y is treated separately. The next section singles out and discusses legal consent as relates to HTC among adolescents in sub-Saharan Africa.

Testing Pregnant and Nonpregnant Female Adolescents in Sub-Saharan Africa

In many African countries where adolescents have limitations in access to HTC and HIV care, early marriage at <15 y, especially amongst girls, is culturally and/or legally permissible (Table 2) (33,42,43). These marriages are often arranged by parents and guardians without input from the adolescent (33,42). Among married adolescent girls age 15–19 y in six West African countries, only 16–26% state that they have a final say in their own healthcare (44). In this regard, early marriage and parenthood where not consistent with empowerment to make choices such as self-testing for HIV, is not necessarily a step toward adulthood and independence. The concept of “emancipated minor” in many of these countries is either nonexistent or poorly defined (33,43), making access to testing and other HIV/SRH-related services difficult for most adolescents.

In addition to relatively high HIV incidence, sub-Saharan African countries have some of the highest pregnancy rates among adolescents in the world (Table 1). The high rate of adolescent pregnancies reflects poor access to family planning for this population and indicates the need for a more integrated and comprehensive approach to adolescent sexual health, including family planning and HTC. With the exception of Rwanda, all the All-In African countries are also priority countries for the elimination of mother-to-child transmission of HIV (45). Pregnant adolescent females living with HIV are a subgroup of African ALHIV that has received relatively little attention. These adolescents often have to contend with the double stigma of teen or preteen pregnancy and HIV; in African societies, both of these phenomena are regarded as indicative of sexual promiscuity. Unless pre- and early pregnancy HTC services for this marginalized group are scaled up, exposed infants and uninfected partners will continue to be at risk for HIV infection.

To date, only two studies, both from South Africa, have specifically evaluated HTC among pregnant adolescents accessing prevention of mother-to-child transmission of HIV (PMTCT) services (46,47). One study was a cross-sectional survey in Kwazulu Natal (KZN) (46); the other was a cohort study with follow-up, in Eastern Cape (47). Ever-tested for HIV rates were similar (≥ 98%) between adolescent and adult mothers in the KZN study (46), likely facilitated by legislation supporting HTC for adolescents 12 y and older in South Africa (33). In the Eastern Cape study, adolescents were 1.4 times less likely to have tested for HIV prior to booking (47). Compared to adult women, adolescents experienced later entry into care, lower ART uptake or inappropriate ART administration, lower early infant diagnosis rates, and increased mother-to-child transmission of HIV (MTCT), stillbirth, and mortality (46,47). These studies highlight gaps in PMTCT service delivery for adolescents and higher risk of MTCT among adolescent HIV-positive mothers, even in the setting of optimized legal access to HTC. It is evident that legal access to HTC should be coupled with timeliness of testing and successful linkage to comprehensive services, particularly among adolescent females before and during pregnancy.

Enabling Strategies and Interventions to Improve Adolescent HIV Testing and Counseling

A rights-based approach should guide access to adolescent SRH and HIV care (37,58), including testing for HIV. Adolescents should be informed of their right to access stigma-free HIV testing and related services provided by respectful, competent staff, and they should participate in the development and implementation of relevant policies and practices. In order to achieve this, an enabling environment should be created within legal, socio-cultural, research and healthcare delivery contexts. Additionally, interventions should target barriers within these different contexts while taking transmission dynamics into consideration. For example, adolescents under age 14 y have no significant gender differences with respect to HIV prevalence, suggesting a nonsexual mode of HIV acquisition (59). However, beyond 14 y, female adolescents have much higher HIV incidence and prevalence as compared to males (7,8,59,60,61) (Table 1). Pregnant adolescent females (46,47), adolescents with early sexual debut, married, or partnered but living separately, engaging in transactional sex, especially in rural areas (62,63), having multiple or older sexual partners (59,60,64), and those experiencing high mobility and labor migration (65,66), have also been identified to be at increased risk of HIV infection and unfavorable outcomes. Lastly, the significant proportions of perinatally-infected individuals surviving into young adolescence and young adulthood should not be overlooked (51,61,67). While advocating for and strengthening HTC uptake and coverage, linkage to quality care should be available to make HTC ultimately beneficial. Recent studies have cited early loss-to-follow-up, refusal of care, and nonreceipt of baseline CD4 as barriers to engagement in care among newly-identified ALHIV (68,69,70). We recommend the following measures to create an enabling environment for HTC among adolescents, including those at highest risk:

  • Enactment of laws expressly permitting independent access to HTC for adolescents less than 18 y of age across the WHO Africa region, but especially in WCA. The median age at sexual debut or age at which customary/traditional marriages are allowed can be used as a benchmark. It is critical for every country to have age of consent legislation that takes age of first exposure to sexual activity (within and outside of marriage) into consideration. This is especially important for girls. These laws should also be consistent with what HTC and SRH guidelines recommend in each country. Consultations among stakeholders, including adolescents and lawmakers, should be held to determine timeline and reference ages for revising HTC legislation. WCA countries can leverage on lessons learned from ESA countries that have already lowered their age of consent for HTC, to move this agenda forward.

  • Development of guidelines and laws for adolescents to independently provide consent for participation in SRH and HIV research. These guidelines and laws should be consistent with those governing the age of consent for routine SRH and HIV services. WCA countries have an opportunity to legislate concurrently for HIV/SRH services and related research since few countries may have pre-existing laws to that effect.

  • Involve both uninfected adolescents and ALHIV in policy-making and practice, from grassroots dialogue as advocates and advisors, to participation in healthcare delivery as peer counselors. Specifically for WCA, adolescents can play a role in increasing identification of undiagnosed ALHIV in highly-affected communities, groups or social circles. Other PLHIV who have already been tested and in care, including family members, can serve as index clients whose adolescent contacts may be tested for increased coverage.

  • Specialized certificate- or license-granting training on adolescent HIV, adolescent SRH service provision and adolescent health-related legislature, for healthcare providers. Emphasis should be put on skill-building in adolescent drug adherence and SRH counseling.

  • HIV seroprevalence, SRH surveys, and other HIV-related data should include younger adolescents 10–14 y old as well as disaggregate data to reflect trends in 10- to 19-y olds. Health surveys and other epidemiologic HIV data often exclude younger adolescents and have poorly-defined or poorly-disaggregated age categories with respect to adolescents (54,67). This limits the ability of funders and policy-makers to make evidence-based recommendations positively impacting on all adolescents and has further implication for mixed epidemic countries where detailed subnational data is necessary to know where testing should be concentrated. Furthermore, more data is needed on the source of infection for ALHIV (behavioral, perinatal through MTCT, or other) (7), especially in WCA, for targeted test and treat strategies.

Specific programming and research interventions to improve HTC among African adolescents should include the following:

  • Provision of adolescent-friendly healthcare facility HTC points of service, with strategies in place to tightly link and retain newly-diagnosed adolescents in care.

  • Expanding testing opportunities beyond healthcare facilities, specifically for female adolescents, for example among rural or out-of-school youth, street hawkers and market traders, in boarding schools, at points of purchase for condoms, and in antenatal care clinics. Given the high birth rates and worse maternal-infant outcomes for HIV- infected adolescent mothers, expanded HTC among adolescent females should be coupled with treatment for Sexually-Transmitted Infections and family planning to prevent unwanted pregnancies.

  • Strategies to improve caregiver involvement in testing, post-test disclosure and access to care for ALHIV regardless of mode of access to testing. Healthcare workers should counsel and support parents and guardians to disclose to their adolescent wards. In addition, parents and guardians of independently-tested ALHIV who need or wish to disclose should be educated and counseled to accept the positive diagnosis and to support their wards.

  • Behavior change communications programs, ideally with post-implementation measurement of impact, targeted specifically to adolescent, family, healthcare worker, law- and policy-maker stakeholders.

  • Engaging ALHIV and families of adolescents living positively with HIV to provide education and improve uptake of HTC among their untested peers, within and outside of the healthcare facility. Reassurance and alleviation of commonly-held testing fears among adolescents by experienced healthcare workers, other PLHIV and educated family members may make a large impact on poor HTC uptake.

Conclusion

In sub-Saharan Africa, where adolescent HIV burden is high, testing rates are low and outcomes most grim, several barriers continue to limit access to HTC. Adolescents desire to be tested for HIV, but those infected are often identified late or not at all, due to late or restricted access often influenced by cultural norms and biases. Removing legal barriers is only one step toward adolescents knowing their HIV status and accessing early and quality HIV care. Robust implementation research studies are needed to provide new knowledge to improve programming and policy for highly accessible HIV testing and care, such as: improved PMTCT service access for pregnant HIV-positive adolescents, community-based interventions to increase adolescent HTC in rural hard-to-reach communities, school-based interventions that integrate HIV education and on-site HIV testing, family involvement, and mobile testing.

This paper adds its voice to the calls for high-burden African countries to urgently address HIV testing and counseling barriers towards the improvement of HIV treatment outcomes for all infected adolescents.

Statement of Financial Support

There was no financial support for this work.

Disclosure

The authors have no conflicts of interest to disclose.

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Acknowledgements

We thank the African adolescents with whom we have worked over the years for their perseverance as we elucidate best practices for keeping them in excellent health. Above all, we thank them for educating us as we work towards this goal.

Author information

Affiliations

  1. Clinical Department, Institute of Human Virology Nigeria, Abuja, Nigeria

    • Nadia A. Sam-Agudu
  2. Division of Epidemiology and Prevention, Institute of Human Virology, University of Maryland School of Medicine, Baltimore, Maryland

    • Nadia A. Sam-Agudu
  3. Department of Pediatrics, University of Maryland School of Medicine, Baltimore, Maryland

    • Nadia A. Sam-Agudu
  4. Department of Paediatrics, University of Cape Coast, Cape Coast, Ghana

    • Nadia A. Sam-Agudu
  5. Department of Child Dental Health and Institute of Public Health, Obafemi Awolowo University, Ile Ife, Nigeria

    • Morenike O. Folayan
  6. Department of Pediatrics, University of Nevada Las Vegas, Las Vegas, Nevada

    • Echezona E. Ezeanolue
  7. Department of Public Health, University of Nevada Las Vegas, Las Vegas, Nevada

    • Echezona E. Ezeanolue

Authors

  1. Search for Nadia A. Sam-Agudu in:

  2. Search for Morenike O. Folayan in:

  3. Search for Echezona E. Ezeanolue in:

Corresponding author

Correspondence to Nadia A. Sam-Agudu.

About this article

Publication history

Received

Accepted

Published

DOI

https://doi.org/10.1038/pr.2016.28

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