Protocol Sets the Frame for Mapping Precision Public Health Across Africa
Precision public health has moved quickly from an appealing idea to a contested field, and Africa remains one of the clearest places where its promise and its practical limits must be examined together. This BMJ Open protocol lays out a scoping review designed to map how the concept is being defined, studied, and applied across the continent, where disease patterns, health system capacity, and data infrastructure vary widely from one setting to another.
The project is built as a scoping review rather than a narrow effectiveness assessment. That choice fits the current state of the literature: precision public health has no universal definition, and the field is still broad enough that the first task is to identify what kinds of work actually exist, where they were done, and how investigators are using the term. In practical terms, the review is meant to capture the range of African evidence rather than force it into a premature clinical hierarchy.
A one-sentence reality sits at the center of the protocol: if the concept is being used inconsistently, the evidence base must be mapped before it can be judged.
Broad Search Strategy Reflects a Fragmented Evidence Base
The search plan is deliberately expansive. Six bibliographic databases will be searched, including African Journals Online, and the investigators will also search grey literature, screen reference lists, and perform forward citation tracking. That combination matters because precision public health research in Africa is unlikely to sit neatly inside a single indexed journal ecosystem; some of the most relevant studies may be dispersed across regional publications, reports, theses, and other nontraditional sources.
The inclusion of grey literature is especially important in a field where policy, implementation, and surveillance often move faster than formal publication. In African health research, valuable work can be lost if the search is confined to major international databases alone. By building in multiple routes to identification, the protocol increases the chance of capturing studies that might otherwise remain invisible to readers outside the region.
Independent screening and data extraction will be conducted with a piloted form, and disagreements will be settled through discussion or referral to a third reviewer. This is a conventional but essential safeguard in a scoping review, where the defining question is often not whether a study exists, but whether it belongs inside a still-fluid conceptual boundary. Consistent adjudication reduces the risk that one reviewer’s interpretation of “precision public health” will dominate the final evidence map.
Definitions Will Shape What the Review Can and Cannot Capture
Precision public health lacks a universal definition, and that creates the central methodological tension in the protocol. Eligibility decisions will depend on how the investigators operationalize the term across studies that may describe genomic surveillance, targeted prevention, geospatial tools, data-driven screening strategies, or other approaches that sharpen public health action for specific populations or settings.
Because the concept itself is unsettled, the review is not simply cataloging interventions. It is also tracking the language used to define the field in African contexts. That distinction affects interpretation at the bedside, in ministries of health, and in research planning: a country’s use of stratified surveillance or targeted intervention may be highly relevant to precision public health even if the paper never uses the phrase in a standardized way.
The protocol does not claim that the field is mature. It treats the lack of definitional consensus as part of the research problem. In a region where infectious disease burden, noncommunicable disease risk, and resource constraints intersect, a rigid definition could miss studies that are operationally precise even if they are not labeled that way.
Language Coverage Broadens Reach, But Translation Gaps May Remain
No language restrictions will be applied during the search, which is a meaningful strength for a continent where important research appears in English, French, Portuguese, and other languages. Even so, the protocol acknowledges a likely limitation: access to full-text translations may still constrain what can be fully included, especially for non-English publications.
That limitation is not trivial. A study can be identified in a search but still be difficult to extract accurately if translation resources are incomplete. For a review focused on Africa, this issue has direct consequences for representativeness. Evidence generated in Francophone or Lusophone settings may be undercounted if full texts cannot be retrieved or interpreted with sufficient precision.
The protocol handles this problem openly rather than pretending it does not exist. That approach strengthens the review’s credibility, because scoping reviews are only as reliable as the boundaries they define and the records they can actually access.
Why a Scoping Review Fits the Current Stage of the Field
Scoping reviews are designed to map evidence, not to estimate treatment effects. Here, that format is appropriate because the field of precision public health in Africa appears to be conceptually diverse and methodologically uneven. Some studies may focus on surveillance systems, some on risk stratification, and others on targeted interventions or analytic platforms. A conventional systematic review would be premature if the first problem is establishing what evidence exists at all.
The Arksey and O’Malley framework provides the methodological backbone, and the review will be reported in line with PRISMA-ScR guidance. Those choices support transparency and reproducibility, both of which are essential when review questions are broad and terminology is unstable. Readers will be able to see how evidence was identified, screened, and categorized, which is particularly important for a topic where conceptual boundaries can shift from one paper to the next.
For clinicians and public health practitioners, the value of the review will lie less in a single numerical estimate than in the structure it offers. A well-executed scoping review can show where evidence clusters, where it is thin, and which populations or regions remain underrepresented. In a continent as diverse as Africa, that map is often the necessary first step before more focused implementation research or outcome studies can be planned.
What the Protocol Signals for African Health Research
The protocol points to a field that is still being built, not one that is ready for definitive claims. It also reflects a broader reality in global health research: precision approaches cannot be imported cleanly without attention to local data systems, disease burden, and access to technology. Africa’s role in this literature will likely depend on whether researchers can align high-resolution data methods with the realities of routine care and public health infrastructure.
The review will not answer whether precision public health works better than other models. It will instead ask a more basic question: what kinds of precision public health work are already being done in Africa, and how are they being described? For a field still searching for common language, that is the right place to start.
The unresolved issue is not whether precision public health has relevance in Africa. It is how much of the current evidence can be found, classified, and interpreted without losing the regional context that gives the field meaning in the first place.