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A low-cost emergency and communication transportation system used 3-wheeled motorcycles driven by trained community volunteers. Delivery referrals were redirected from health centers to hospitals capable of advanced services including cesarean deliveries, which was associated with reduced facility-based maternal mortality., Although Ghana has a well-organized primary health care system, it lacks policies and guidelines for developing or providing emergency referral services. In 2012, an emergency referral pilot—the Sustainable Emergency Referral Care (SERC) initiative—was launched by the Ghana Health Service in collaboration with community stakeholders and health workers in one subdistrict of the Upper East Region where approximately 20,000 people reside. The pilot program was scaled up in 2013 to a 3-district (12-subdistrict) plausibility trial that served a population of approximately 184,000 over 2 years from 2013 to 2015. The SERC initiative was fielded as a component of a 6-year health systems strengthening and capacity-building project known as the Ghana Essential Health Intervention Program. Implementation research using mixed methods, including quantitative analysis of key process and health indicators over time in the 12 intervention subdistricts compared with comparison districts, a survey of health workers, and qualitative systems appraisal with community members, provided data on effectiveness of the system as well as operational challenges and potential solutions. Monitoring data show that community exposure to SERC was associated with an increased volume of emergency referrals, diminished reliance on primary care facilities not staffed or equipped to provide surgical care, and increased caseloads at facilities capable of providing appropriate acute care (i.e., district hospitals). Community members strongly endorsed the program and expressed appreciation for the service. Low rates of adherence to some care protocols were noted: referring facilities often failed to alert receiving facilities of incoming patients, not all patients transported were accompanied by a health worker, and receiving facilities commonly failed to provide patient outcome feedback to the referring facility. Yet in areas where SERC worked to bypass substandard points of care, overall facility-based maternal mortality as well as accident-related deaths decreased relative to levels observed in facilities located in comparison areas.

The volume of literature on health systems in sub-Saharan Africa has been expanding since the 2000 MDG era. Focus has remained generally on categorical health themes rather than systems concepts. Topics such as scaling-up, organizational development, data use for decision making, logistics, and financial planning remain underrepresented. And quite surprisingly, implementation science remains something of a “black hole.” But bibliometric evidence suggests there is a shift in focus that may soon address these gaps., Growing international concern about the need for improved health systems in Africa has catalyzed an expansion of the health systems literature. This review applies a bibliometric procedure to analyze the acceleration of scientific writing on this theme. We focus on research published during the Millennium Development Goal (MDG) era between 1990 and 2014, reporting findings from a systematic review of a database comprised of 17,655 articles about health systems themes from sub-Saharan African countries or subregions. Using bibliometric tools for co-word textual analysis, we analyzed the incidence and associations of keywords and phrases to generate and visualize topical foci on health systems as clusters of themes, much in the manner that astronomers represent groupings of stars as galaxies of celestial entities. The association of keywords defines their relative position, with the size of images weighted by the relative frequency of terms. Sets of associated keywords are arrayed as stars that cluster as “galaxies” of concepts in the knowledge universe represented by health systems research from sub-Saharan Africa. Results show that health systems research is dominated by literature on diseases and categorical systems research topics, rather than on systems science that cuts across diseases or specific systemic themes. Systems research is highly developed in South Africa but relatively uncommon elsewhere in the region. “Black holes” are identified by searching for terms in our keyword library related to terms in widely cited reviews of health systems. Results identify several themes that are unexpectedly uncommon in the country-specific health systems literature. This includes research on the processes of achieving systems change, the health impact of systems strengthening, processes that explain the systems determinants of health outcomes, or systematic study of organizational dysfunction and ways to improve system performance. Research quantifying the relationship of governance indicators to health systems strengthening is nearly absent from the literature. Long-term experimental studies and statistically rigorous research on cross-cutting themes of health systems strengthening are rare. Studies of organizational malaise or corruption are virtually absent. Trend analysis shows the emergence of organizational research on specific priority diseases, such as on HIV/AIDS, malaria, and tuberculosis, but portrays a lack of focus on integrated systems research on the general burden of disease. If health systems in Africa are to be strengthened, then organizational change research must be a more concerted focus in the future than has been the case in the past.