The numbers behind the concern are stark. The World Health Organization estimates that more than 430 million people worldwide currently live with disabling hearing loss, a figure projected to exceed 700 million by 2050. Within Africa, roughly 40 million people are affected, representing a prevalence of 3.6 percent. That burden is expected to climb to 54 million by 2030 and 97 million by 2050, with associated economic losses estimated at 27.1 billion US dollars annually. Despite these projections, hearing healthcare remains largely invisible within national health agendas in many low- and middle-income countries, where legislative attention and funding flow preferentially toward high-profile, life-threatening diseases such as HIV/AIDS, malaria, and tuberculosis.

Preventive audiology, as the review frames it, encompasses the strategies, policies, and practices aimed at preventing hearing loss and mitigating its consequences across the lifespan. A life-course perspective is fundamental because hearing health risks and legislative requirements differ across population groups. Preventive interventions range from universal newborn hearing screening and early hearing detection and intervention programs during infancy, to hearing conservation among school-aged children, occupational hearing conservation for economically active adults, ototoxicity monitoring for individuals receiving potentially ototoxic medications, and hearing care for older adults experiencing age-related hearing loss. In the African context, preventive audiology aligns with re-engineered primary healthcare frameworks and WHO guidance, addressing major burdens including early hearing detection and intervention, middle ear pathologies, ototoxicity, and occupational noise-induced hearing loss.

To build the evidence map, Khoza-Shangase conducted a structured narrative review, reported in accordance with the PRISMA 2020 guidelines, searching PubMed, Scopus, Web of Science, African Journals Online, and Google Scholar for peer-reviewed literature and key legislative and policy documents published between 2000 and 2025. Data were extracted using a standardized framework capturing study characteristics, legislative scope, institutional oversight, operationalization, and systemic factors, then synthesized thematically across national, continental, and global frameworks. Thirty-one sources met the inclusion criteria, comprising narrative reviews, scoping and systematic reviews, policy analyses, qualitative studies, scholarly book chapters, and continental and international policy instruments.

The geographical concentration of the evidence is itself a finding. South Africa accounted for approximately one-third of the country-specific evidence, followed by West Africa, primarily Nigeria and Ghana, East Africa, primarily Kenya, and North Africa, primarily Egypt. Continental frameworks, notably African Union instruments such as the Disability Protocol and the Health Research and Innovation Strategy for Africa, formed an important component of the evidence base, highlighting both the increasing emphasis on continental governance and the relatively limited availability of cross-national analyses of audiology-specific legislation. Global normative instruments from the WHO, including World Health Assembly Resolution WHA70.13, the World Report on Hearing, and the H.E.A.R.I.N.G. Technical Package, provided essential benchmarks for preventive audiology, occupational hearing conservation, and early hearing detection and intervention integration.

Among the most striking results is the pronounced implementation gap between continental rights-based commitments and national translation. The African Union Protocol on the Rights of Persons with Disabilities, adopted in 2018, provides a legally binding framework that explicitly recognizes audiology as a component of habilitation and rehabilitation services, which states are obliged to ensure are accessible, affordable, and integrated into public health systems. Yet domestication of these commitments into enforceable national legislation remains inconsistent, with many AU member states yet to enact legislation reflecting these principles. Among the countries represented in the included literature, Egypt was the only country identified as having a mandatory, country-wide universal newborn hearing screening program, employing two-phase otoacoustic emissions screening and confirmatory auditory brainstem response testing, with coverage exceeding 82 percent and follow-up attendance above 90 percent. Most sub-Saharan African countries, by contrast, rely on fragmented pilot projects or professional guidelines rather than statutory mandates.

The consequences of this legislative vacuum are measurable. In South Africa, professional guidance aligns with internationally recognized 1:3:6 benchmarks, meaning screening by one month, diagnosis by three months, and intervention by six months, yet these recommendations lack statutory enforcement, contributing to considerable variation in implementation across provinces. Congenital hearing loss in many African settings is identified late, often at around 30 months of age, far exceeding the internationally recommended benchmark of detection by one month. In Nigeria, the National Health Act of 2014 and the National Health Insurance Authority Act of 2022 provide overarching governance for the health system but do not specifically mandate universal newborn hearing screening or structured audiology oversight. In Kenya, the Health Act of 2017 and the Constitution recognize the right to the highest attainable standard of health, yet ear and hearing care services remain only partially integrated within essential health benefit packages. Ghana’s Public Health Act of 2012 is operational but contains no hearing-specific regulation.

Occupational hearing conservation provides one of the clearest examples of the disconnect between legislative existence and effective implementation. Occupational noise exposure limits are established in many jurisdictions, with partial alignment observed across East African countries at 85 and 90 dB(A) thresholds, but enforcement remains inconsistent, particularly within mining and other high-risk industries. In South Africa, laws such as the Occupational Health and Safety Act, the Mine Health and Safety Act, and noise-induced hearing loss regulations are active but fragmented, with hearing conservation implemented nationally while enforcement and integration remain inconsistent. A further regulatory blind spot concerns chemical ototoxicity, for which no legal instruments exist in South Africa despite the known risks of combined noise and chemical exposure. Recent evidence also demonstrates that occupational hearing conservation legislation has not adequately evolved to address the combined risks associated with hazardous occupational noise exposure and ototoxic medications used in HIV management, an important gap in countries with high HIV prevalence where occupational and public health legislation continue to operate largely in parallel.

The review identified five recurring systemic barriers impeding effective implementation. Severe shortages of audiologists, particularly within rural and public sector services, continue to limit preventive audiology coverage, with South African evidence showing that audiology services remain concentrated within urban private-sector settings. High out-of-pocket expenditure for hearing aids, cochlear implants, diagnostic services, and hearing screening, together with limited reimbursement through national insurance schemes, restricts equitable access. Weak legislative and regulatory enforcement undermines even well-designed occupational noise regulations. Cultural stigma and limited public awareness contribute to delayed help-seeking and reduced uptake of screening programs. Finally, limited awareness among healthcare professionals regarding legislative and regulatory provisions further constrains implementation and weakens policy translation into clinical practice.

Despite these challenges, the review identifies substantial opportunities for strengthening preventive audiology across Africa. Integration of ear and hearing care into universal health coverage schemes and re-engineered primary healthcare systems offers perhaps the greatest opportunity for expanding equitable access, particularly where benefit packages explicitly include preventive hearing services, early identification, and rehabilitation. Tele-audiology, mobile health technologies, AI-supported risk assessment, and digital occupational noise monitoring offer promising approaches to overcoming geographical barriers while supporting regulatory implementation. Appropriately regulated task-sharing and task-shifting, supported by competency-based training, could extend the reach of scarce audiology personnel. The African Union’s Health Research and Innovation Strategy for Africa 2018-2030 provides an important framework for strengthening African-led research and promoting contextually appropriate evidence generation. The economic case reinforces the urgency: untreated hearing loss costs African economies an estimated 27.1 billion US dollars annually, while investments in hearing technologies and preventive interventions demonstrate favorable economic returns in low- and middle-income countries. Collectively, the findings suggest that the principal challenge lies not in the absence of continental or global policy aspirations, but in the limited translation of these commitments into sustainable, enforceable, and equitable hearing-care systems across diverse African contexts.

Subject of Research: Preventive audiology legislation and regulation in Africa

Article Title: Mapping legislative and regulatory frameworks for preventive audiology in Africa: progress and challenges

Article References: Khoza-Shangase, K. (2026). Mapping legislative and regulatory frameworks for preventive audiology in Africa: progress and challenges. Frontiers in Audiology and Otology, 4, Article 1902064. https://doi.org/10.3389/fauot.2026.1902064

Image Credits: AI Generated

DOI: 10.3389/fauot.2026.1902064

Keywords: preventive audiology, Africa, hearing loss, health policy, newborn hearing screening, occupational noise, universal health coverage, tele-audiology, Mapping, legislative, regulatory, frameworks