Applying the Community Health Worker Coverage and Capacity Tool for Time-Use Modeling for Program Planning in Rwanda and Zanzibar.

Community health worker (CHW) programs are a critical component of health systems, notably in lower- and middle-income countries. However, when policy recommendations exceed what is feasible to implement, CHWs are overstretched by the volume of activities, implementation strength is diluted, and programs fail to produce promised outcomes. To counteract this, we developed a time-use modeling tool-the CHW Coverage and Capacity (C3) Tool-and used it with government partners in Rwanda and Zanzibar to address common policy questions related to CHW needs, coverage, and time optimization.In Rwanda, the C3 Tool was used to analyze 2 well-established cadres of CHWs and 1 new one. The well-established CHW cadres were within a "manageable" workload range whereas the new cadre was projected to achieve less than half of assigned activities. This is informing ongoing changes to the CHWs' scopes of work. In Zanzibar, the C3 Tool was used to update the national community health strategy to include community health volunteers (CHVs) for the first time and determine how many CHVs were needed. The tool projected that 2,200 CHVs could achieve approximately 90% coverage of all defined services. Based on these figures, Zanzibar updated its national community health strategy, which officially launched in February 2020.We discuss lessons from these 2 experiences. Translating analysis into decision making depends not only on the programmatic will and motivation of governments but also on finding opportune timing for when policy and program processes allow for optimization of CHW investments. Further research is needed but our experience supports the value of a modeling tool to ground program plans within estimated constraints on CHW time.

Improving health facility delivery rates in Zanzibar, Tanzania through a large-scale digital community health volunteer programme: a process evaluation.

The utilization of community health worker (CHW) programmes to improve maternal and neonatal health outcomes has become widely applied in low- and middle-income countries. While current research has focused on discerning the effect of these interventions, documenting the process of implementing, scaling and sustaining these programmes has been largely ignored. Here, we focused on the implementation of the Safer Deliveries CHW programme in Zanzibar, a programme designed to address high rates of maternal and neonatal mortality by increasing rates of health facility delivery and postnatal care visits. The programme was implemented and brought to scale in 10 of 11 districts in Zanzibar over the course of 3 years by D-tree International and the Zanzibar Ministry of Health. As the programme utilized a mobile app to support CHWs during their visits, a rich data resource comprised of 133 481 pregnancy and postpartum home visits from 41 653 women and 436 CHWs was collected, enabling the evaluation of numerous measures related to intervention fidelity and health outcomes. Utilizing the framework of Steckler et al., we completed a formal process evaluation of the primary intervention, CHW home visits to women during their pregnancy and postpartum period. Our in-depth analysis and discussion will serve as a model for process evaluations of similar CHW programmes and will hopefully encourage future implementers to report analogous measures of programme performance.

Operationalizing Integrated Immunization and Family Planning Services in Rural Liberia: Lessons Learned From Evaluating Service Quality and Utilization.

BACKGROUND: Integration of family planning and immunization services provides an opportunity to meet women's need for postpartum family planning and infants' vaccination needs through client-centered care, while reducing financial and opportunity costs for families. The United States Agency for International Development's Maternal and Child Survival Program (MCSP) supported the Liberia Ministry of Health to scale up integrated family planning and immunization services as part of a broader service delivery and health systems recovery program after the Ebola epidemic. METHODS: We conducted a mixed-methods program evaluation in 22 health facilities in Grand Bassa and Lofa counties. Family planning uptake and immunization dropout rates at project sites were compared to rates at 18 matched health facilities in the same counties. We conducted 34 focus group discussions with community members and 43 key informant interviews with health care providers and managers to explore quality of care and contextual factors affecting provision and use of integrated services including postpartum family planning. RESULTS: From November 2016 to July 2017, 1,066 women accepted referrals from immunization to family planning counseling (10% of all vaccinator-caregiver interactions); the majority of women who were referred (75%) accepted a family planning method the same day. Trends indicated slightly higher family planning uptake in intervention over nonintervention facilities, but differences were not statistically significant. Pentavalent vaccine dropout rates did not increase in intervention compared to nonintervention facilities indicating no negative impact on utilization of immunization services. Clients and providers expressed that the integrated services reduced costs and time for the clients, educated mothers about postpartum family planning, and ensured infants were completing their vaccinations. Providers expressed the need for increased human resources to meet the elevated demand for family planning counseling services and additional focus on community-level social and behavior change activities. Both groups emphasized that social stigma and norms about postpartum sexual abstinence prevented many women from seeking postpartum family planning services. CONCLUSION: Although scaling up integrated family planning-immunization services may be programmatically feasible and acceptable to clients and providers, the intervention's success and ability to understand and quantify impact are driven by the effect of contextual factors and fidelity to the intervention approach. Contextual factors need to be understood before implementation, measured during implementation, and addressed throughout implementation to maximize the approach's impact on service utilization and health outcomes.

"It builds your confidence you've done well": Healthcare workers' experiences of participating in a low-dose, high-frequency training to improve newborn survival on the day of birth in Ghana.

Background: The majority of newborn deaths occur during the first week of life, and 25‒45% occur within the first 24 hours. A low-dose, high-frequency (LDHF) training approach was introduced in 40 hospitals in Ghana to improve newborn survival. The aim of this qualitative study was to explore healthcare workers' experiences with the LDHF approach to in-service training. Methods: A total of 20 in-depth interviews and nine focus group discussions were conducted in 2016 in three regions of Ghana with healthcare workers who participated in implementation of the LDHF training approach. In-depth interviews were conducted with 20 master mentors and peer practice coordinators; 51 practicing doctors, midwives and nurses participated in focus group discussions. Data were analyzed using a thematic analysis approach. Results: Healthcare workers reflected on the differences between the LDHF approach and past learning experiences, highlighting how the skills-based team training approach, coupled with high-frequency practice and mobile mentoring, built their competency and confidence. As participants shared their experiences, they highlighted relationships established between Master Mentors and healthcare workers, and motivation stemming from pride in contributing to reductions in maternal and newborn deaths as critical factors in improving quality of care at participating health facilities. Conclusion: This nested qualitative study documents experiences of healthcare workers and mentors involved in implementation of a multi-faceted intervention that effectively improved maternal and newborn care at health facilities in Ghana. The way the intervention was implemented created an environment conducive to learning within the hospital setting, thus providing an opportunity for professional growth and quality improvement for all staff working in the maternity ward.

A novel personal protective equipment coverall was rated higher than standard Ebola virus personal protective equipment in terms of comfort, mobility and perception of safety when tested by health care workers in Liberia and in a United States biocontainment unit.

BACKGROUND: During the 2014-2016 Ebola virus epidemic, more than 500 health care workers (HCWs) died in spite of the use of personal protective equipment (PPE). The Johns Hopkins University Center for Bioengineering Innovation and Design (CBID) and Jhpiego, an international nongovernmental organization affiliate of Johns Hopkins, collaborated to create new PPE to improve the ease of the doffing process. METHODS: HCWs in Liberia and a US biocontainment unit compared standard Médecins Sans Frontière PPE (PPE A) with the new PPE (PPE B). Participants wore each PPE ensemble while performing simulated patient care activities. Range of motion, time to doff, comfort, and perceived risk were measured. RESULTS: Overall, 100% of participants preferred PPE B over PPE A (P < .0001); 98.1% of respondents would recommend PPE B for their home clinical unit (P < .0001). There was a trend towards greater comfort in PPE B. HCWs at both sites felt more at risk in PPE A than PPE B (71.9% vs 25% in Liberia, P < .0001; 100% vs 40% in the US biocontainment unit, P < .0001). CONCLUSIONS: HCWs preferred a new PPE ensemble to Médecins Sans Frontière PPE for high-consequence pathogens. Further studies on the safety of this new PPE need to be conducted.

Accelerating newborn survival in Ghana through a low-dose, high-frequency health worker training approach: a cluster randomized trial.

BACKGROUND: Newborn deaths comprise nearly half of under-5 deaths in Ghana, despite the fact that skilled birth attendants (SBAs) are present at 68% of births, which implies that evidence-based care during labor, birth and the immediate postnatal period may be deficient. We assessed the effect of a low-dose, high-frequency (LDHF) training approach on long-term evidence-based skill retention among SBAs and impact on adverse birth outcomes. METHODS: From 2014 to 2017, we conducted a cluster-randomized trial in 40 hospitals in Ghana. Eligible hospitals were stratified by region and randomly assigned to one of four implementation waves. We assessed the relative risks (RRs) of institutional intrapartum stillbirths and 24-h newborn mortality in months 1-6 and 7-12 of implementation as compared to the historical control period, and in post-intervention facilities compared to pre-intervention facilities during the same period. All SBAs providing labor and delivery care were invited to enroll; their knowledge and skills were assessed pre- and post-training, and 1 year later. RESULTS: Adjusting for region and health facility type, the RR of 24-h newborn mortality in the 40 enrolled hospitals was 0·41 (95% CI 0·32-0·51; p < 0.001) in months 1-6 and 0·30 (95% CI 0·21-0·43; p < 0·001) in months 7-12 compared to baseline. The adjusted RR of intrapartum stillbirth was 0·64 (95% CI 0·53-0·77; p < 0·001) in months 1-6 and 0·48 (95% CI 0·36-0·63; p < 0·001) in months 7-12 compared to baseline. Four hundred three SBAs consented and enrolled. After 1 year, 200 SBAs assessed had 28% (95% CI 25-32; p < 0·001) and 31% (95% CI 27-36; p < 0·001) higher scores than baseline on low-dose 1 and 2 content skills, respectively. CONCLUSIONS: This training approach results in a sustained decrease in facility-based newborn mortality and intrapartum stillbirths, and retained knowledge and skills among SBAs after a year. We recommend use of this approach for future maternal and newborn health in-service training and programs. TRIAL REGISTRATION: Retrospectively registered on 25 September 2017 at Clinical Trials, identifier NCT03290924 .

Incremental cost and cost-effectiveness of low-dose, high-frequency training in basic emergency obstetric and newborn care as compared to status quo: part of a cluster-randomized training intervention evaluation in Ghana.

BACKGROUND: Low-dose, high-frequency (LDHF) training is a new approach best practices to improve clinical knowledge, build and retain competency, and transfer skills into practice after training. LDHF training in Ghana is an opportunity to build health workforce capacity in critical areas of maternal and newborn health and translate improved capacity into better health outcomes. METHODS: This study examined the costs of an LDHF training approach for basic emergency obstetric and newborn care and calculates the incremental cost-effectiveness of the LDHF training program for health outcomes of newborn survival, compared to the status quo alternative of no training. The costs of LDHF were compared to costs of traditional workshop-based training per provider trained. Retrospective program cost analysis with activity-based costing was used to measure all resources of the LDHF training program over a 3-year analytic time horizon. Economic costs were estimated from financial records, informant interviews, and regional market prices. Health effects from the program's impact evaluation were used to model lives saved and disability-adjusted life years (DALYs) averted. Uncertainty analysis included one-way and probabilistic sensitivity analysis to explore incremental cost-effectiveness results when fluctuating key parameters. RESULTS: For the 40 health facilities included in the evaluation, the total LDHF training cost was $823,134. During the follow-up period after the first LDHF training-1 year at each participating facility-approximately 544 lives were saved. With deterministic calculation, these findings translate to $1497.77 per life saved or $53.07 per DALY averted. Probabilistic sensitivity analysis, with mean incremental cost-effectiveness ratio of $54.79 per DALY averted ($24.42-$107.01), suggests the LDHF training program as compared to no training has 100% probability of being cost-effective above a willingness to pay threshold of $1480, Ghana's gross national income per capita in 2015. CONCLUSION: This study provides insight into the investment of LDHF training and value for money of this approach to training in-service providers on basic emergency obstetric and newborn care. The LDHF training approach should be considered for expansion in Ghana and integrated into existing in-service training programs and health system organizational structures for lower cost and more efficiency at scale.

Safety of a killed oral cholera vaccine (Shanchol) in pregnant women in Malawi: an observational cohort study.

BACKGROUND: Pregnancy increases the risk of harmful effects from cholera for both mothers and their fetuses. A killed oral cholera vaccine, Shanchol (Shantha Biotechnics, Hydrabad, India), can protect against the disease for up to 5 years. However, cholera vaccination campaigns have often excluded pregnant women because of insufficient safety data for use during pregnancy. We did an observational cohort study to assess the safety of Shanchol during pregnancy. METHODS: This observational cohort study was done in two adjacent districts (Nsanje and Chikwawa) in Malawi. Individuals older than 1 year in Nsanje were offered oral cholera vaccine during a mass vaccination campaign between March 30 and April 30, 2015, but no vaccines were administered in Chikwawa. We enrolled women who were exposed to oral cholera vaccine during pregnancy in Nsanje district, and women who were pregnant in Chikwawa district (and thus not exposed to oral cholera vaccine) during the same period. The primary endpoint of our analysis was pregnancy loss (spontaneous miscarriage or stillbirth), and the secondary endpoints were neonatal deaths and malformations. We evaluated these endpoints using log-binomial regression, adjusting for the imbalanced baseline characteristics between the groups. This study is registered with ClinicalTrials.gov, number NCT02499172. FINDINGS: We recruited 900 women exposed to oral cholera vaccine and 899 women not exposed to the vaccine between June 16 and Oct 10, 2015, and analysed 835 in each group. 361 women exposed to the vaccine and 327 not exposed to the vaccine were recruited after their pregnancies had ended. The incidence of pregnancy loss was 27·54 (95% CI 18·41-41·23) per 1000 pregnancies among those exposed to the vaccine and 21·56 (13·65-34·04) per 1000 among those not exposed. The adjusted relative risk for pregnancy loss among those exposed to oral cholera vaccine was 1·24 (95% CI 0·64-2·43; p=0·52) compared with those not exposed to the vaccine. The neonatal mortality rate was 11·78 (95% CI 5·92-23·46) per 1000 livebirths for infants whose mothers were exposed to oral cholera vaccine versus 8·91 (4·02-19·77) per 1000 livebirths for infants whose mothers were not exposed to the vaccine (crude relative risk 1·32, 95% CI 0·46-3·84; p=0·60). Only three newborn babies had malformations, two in the vaccine exposure group and one in the no-exposure group, yielding a relative risk of 2·00 (95% CI 0·18-22·04; p=0·57), although this estimate is unreliable because of the small number of outcomes. INTERPRETATION: Our study provides evidence that fetal exposure to oral cholera vaccine confers no significantly increased risk of pregnancy loss, neonatal mortality, or malformation. These data, along with findings from two retrospective studies, support use of oral cholera vaccine in pregnant women in cholera-affected regions. FUNDING: Bill & Melinda Gates Foundation.

Updated global burden of cholera in endemic countries.

BACKGROUND: The global burden of cholera is largely unknown because the majority of cases are not reported. The low reporting can be attributed to limited capacity of epidemiological surveillance and laboratories, as well as social, political, and economic disincentives for reporting. We previously estimated 2.8 million cases and 91,000 deaths annually due to cholera in 51 endemic countries. A major limitation in our previous estimate was that the endemic and non-endemic countries were defined based on the countries' reported cholera cases. We overcame the limitation with the use of a spatial modelling technique in defining endemic countries, and accordingly updated the estimates of the global burden of cholera. METHODS/PRINCIPAL FINDINGS: Countries were classified as cholera endemic, cholera non-endemic, or cholera-free based on whether a spatial regression model predicted an incidence rate over a certain threshold in at least three of five years (2008-2012). The at-risk populations were calculated for each country based on the percent of the country without sustainable access to improved sanitation facilities. Incidence rates from population-based published studies were used to calculate the estimated annual number of cases in endemic countries. The number of annual cholera deaths was calculated using inverse variance-weighted average case-fatality rate (CFRs) from literature-based CFR estimates. We found that approximately 1.3 billion people are at risk for cholera in endemic countries. An estimated 2.86 million cholera cases (uncertainty range: 1.3m-4.0m) occur annually in endemic countries. Among these cases, there are an estimated 95,000 deaths (uncertainty range: 21,000-143,000). CONCLUSION/SIGNIFICANCE: The global burden of cholera remains high. Sub-Saharan Africa accounts for the majority of this burden. Our findings can inform programmatic decision-making for cholera control.

Role of corticotropin-releasing factor pathways in stress-related alterations of colonic motor function and viscerosensibility in female rodents.

BACKGROUND: Clinical reports have shown that irritable bowel syndrome (IBS) is comorbid with anxiety/depression and stress-related events, and that the disorder is more prevalent among women than among men. In rodents, colorectal distention (CRD) induces abdominal contractions, and this visceromotor response is used to assess visceral pain. The activation of brain corticotropin-releasing factor (CRF) pathways has a key role in the behavioral and visceral responses to stress. OBJECTIVE: In this review of experimental studies that delineate the underlying mechanisms of the stress response, we focused on CRF signaling pathways and sex hormones in modulating visceral hypersensitivity induced by CRD in rodents. METHODS: The findings of our recent research on the development of an experimental model of visceral pain in female rats and the modulation of the hyperalgesic response to CRD by CRF antagonists were integrated with those of the published literature. A MEDLINE search of the years 1981 to 2005 was conducted using the key words stress, CRF, CRH, CRF1 receptor, IBS, CRD, female rat, visceral pain, estrogen, and anxiety. RESULTS: CRF and other related mammalian peptides (urocortins) interact with the distinct CRF subtype 1 and 2 receptors. Well-documented preclinical studies have established the role of brain CRF1 receptors in mediating stress-related anxiogenic and visceral (stimulation of colonic motor function and sensitization to repeated CRD) responses in male rodents, whereas more limited studies have been performed in female rats. Our recent study indicated that the CRF1 antagonist antalarmin prevents visceral hypersensitivity induced by 2 sets of CRD in female rats. In several models of visceral pain induced by CRD, sex differences and a sensitization action of estrogen were reported. Our preliminary evidence indicated a potentiating interaction between CRF-CRF1 pathways and estrogen in the stimulation of colonic motor responses that may take place within the enteric neurons of the colon, where both CRF1 and estrogen receptors are present. CONCLUSIONS: The results of this review suggest that overactivity of CRF1 signaling in the brain and the gut may have relevance in understanding the comorbidity of anxiety/depression and IBS in diarrhea-predominant female patients. Targeting these mechanisms with CRF1 antagonists may provide a novel therapeutic strategy.

Regulation of nitric oxide consumption by hypoxic red blood cells.

The homeostasis of nitric oxide (NO) is attained through a balance between its production and consumption. Shifts in NO bioavailability have been linked to a variety of diseases. Although the regulation of NO production has been well documented, its consumption is largely thought to be unregulated. Here, we have demonstrated that under hypoxic conditions, NO accelerates its own consumption by increasing its entry into RBCs. When RBCs were exposed to NO (1:400 NO/heme ratio) under hypoxic conditions to form HbFe(II)NO, the consumption rate of NO increased significantly. This increase in NO consumption converted the bioactivity of serotonin from a vasodilator to a vasoconstrictor in isolated coronary arterioles. We identified HbFe(II)NO as a potential mediator of accelerated NO consumption. Accelerated NO consumption by HbFe(II)NO-bearing RBCs may contribute to hypoxic pulmonary vasoconstriction and the rebound effect seen on termination of NO inhalation therapy. Furthermore, accelerated NO consumption may exacerbate ischemia-mediated vasospasm and nitrate tolerance. Finally, this phenomenon may be an evolved mechanism to stabilize the vasculature in sepsis.