Sickle cell in sub-Saharan Africa — the monitoring gap and what changes with remote data

Sub-Saharan Africa carries the greatest burden of sickle cell disease in the world. Estimates suggest that approximately 75 percent of the global births of babies with sickle cell disease occur in the region, with Nigeria, the Democratic Republic of Congo, and Tanzania among the most affected countries. Yet despite this prevalence, the infrastructure for managing the condition has historically lagged significantly behind the scale of need.

The Scale of the Challenge

Access to specialist haematological care remains limited across much of sub-Saharan Africa. Newborn screening programmes, while expanding, have not yet achieved universal coverage. Many patients receive a diagnosis only after experiencing their first severe crisis — sometimes years after birth. In some regions, the majority of children born with sickle cell disease do not survive to adulthood, not because effective treatments do not exist, but because those treatments are not accessible.

The monitoring gap compounds these challenges. Even in settings where patients have access to some level of care, the ability to monitor health between clinical encounters is severely limited. Patients may travel significant distances for appointments, making frequent follow-up impractical. When a crisis begins, the distance to care may mean that treatment begins hours after it should.

What Remote Monitoring Changes

Remote health monitoring technology offers a potential pathway to address parts of this gap. By enabling continuous biometric tracking through wearable devices connected to mobile applications, remote monitoring can extend the reach of clinical oversight beyond the walls of health facilities.

For patients in rural or peri-urban areas, this means that a change in physiological status — a sustained drop in oxygen saturation, an elevated heart rate, a rise in skin temperature — can be detected and flagged in real time, regardless of proximity to a health facility. Early warning alerts can prompt patients to take action before a crisis fully develops: resting, hydrating, contacting a care team, or seeking medical attention while they are still well enough to travel safely.

For healthcare teams managing large, geographically dispersed patient populations, remote monitoring data provides a way to maintain oversight without requiring every patient to attend in person for every routine check. Risk stratification tools can help clinical teams identify which patients need urgent attention and which are stable, allowing limited resources to be deployed where they will have the greatest impact.

Emerging Evidence

Research from sub-Saharan Africa examining remote monitoring interventions has reported encouraging early findings. Studies in Nigeria and Ghana have found that patients using wearable monitoring devices demonstrate increased awareness of their physiological patterns and report feeling more confident in managing their condition day to day. Healthcare providers report that remote monitoring data enriches clinical consultations, providing objective information that complements patient recall.

Importantly, the technology is becoming more accessible. Improved connectivity across much of sub-Saharan Africa, combined with the widespread adoption of mobile phones, means that the infrastructure required to support remote monitoring is increasingly present in communities where it is most needed.

Closing the monitoring gap in sub-Saharan Africa will require more than technology. It will require investment in healthcare systems, expansion of specialist training, and sustained attention to the social determinants of health that shape disease outcomes. But remote monitoring has a meaningful role to play — extending the reach of care, supporting early intervention, and giving patients the information they need to understand and manage their own health.