**Background:** Northwest Syria (NWS) is an extremely fragile operating environment with 4.4 million residents, roughly two-thirds internally displaced, and an estimated 2.7 million people requiring health assistance. Health service delivery was fragmented among multiple NGOs with uncoordinated standards, duplicated services, and rare referrals. To address this, WHO developed an Essential Health Services Package (EHSP) in 2016 and subsequently supported an integrated facility network in Harim District. This evaluation examines the network's evolution from 2017–2021 and assesses its effectiveness against goals of comprehensive, coordinated services, equitable access, and efficient service delivery.
**Methods:** This mixed-method study (conducted first half of 2021) included: (1) document review of network terms of reference, EHSP documents, quality/gap analyses, and service costings; (2) two group model building workshops with 21 participants (donors/WHO staff and health professionals/managers); (3) semi-structured interviews with 81 key informants including donors, health professionals, community health workers, and community members/patients; (4) cross-sectional surveys of 59 health care professionals and 447 service users (233 pregnant women, 214 persons with NCDs) across network and non-network facilities. Quantitative analysis used t-tests and chi-square tests (significance at p<0.05). Qualitative analysis was inductive with deductive synthesis across methods.
**Key Results:** The network grew from 10 facilities serving 180,000 people to 38 facilities serving 1.6 million people over four years. Provider surveys showed network facilities had significantly higher agreement on ability to provide comprehensive services (p=0.037) and better team coordination (p=0.017). Patient surveys revealed significantly lower financial barriers in network facilities (37% vs. 51% reporting barriers often/every time, p<0.001). For pregnant women, network facilities showed significantly higher uptake of first-trimester blood tests (71% vs. 43%, p<0.001), glucose tests (39% vs. 25%, p=0.037), urine tests (90% vs. 47%, p<0.001), and physical examinations at each visit (53% vs. 19%, p<0.001), despite fewer mean consultations (2.6 vs. 4.2, p<0.001), suggesting efficiency gains. For NCD patients, screening for complications was significantly higher in network facilities: eye examinations for hypertension (31% vs. 16%, p=0.039) and diabetes (37% vs. 16%, p=0.031). However, disease control was poor across all settings (only 17% with controlled hypertension and 11% with controlled diabetes based on last readings). Qualitative findings indicated broad stakeholder satisfaction with the network's adaptive capacity, standardization of protocols, improved referral systems, and reduced service duplication. Key challenges included staff retention due to unregulated labor markets, fragmented donor reporting requirements, governance gaps, and reliance on cross-border supplies.
**Clinical Implications:** The Harim network demonstrates that coordinated service delivery networks with standardized essential packages can improve care quality, access, and efficiency even in complex emergency settings with high population displacement and fragmented governance. The model's success in improving maternal health service uptake and NCD complication screening—areas critical for protracted crises—suggests this approach could be adapted for other fragile settings. However, the persistently low disease control rates for hypertension and diabetes highlight that improving service access alone is insufficient without addressing continuity of care, medication availability, and patient self-management support. The network's evolution from purely absorptive to adaptive and transformative capacities offers a framework for building health system resilience in conflict-affected areas. Key enabling factors include a credible coordinating body (WHO/Health Cluster), standardized protocols, functional reporting platforms (4Ws, HeRAMS), and local NGO capacity. Future priorities should include strengthening governance, integrating vertical programs (mental health, community health), harmonizing human resource management, and developing sustainable financing mechanisms beyond humanitarian funding cycles.