*i. Background or problem statement* The goal of this project is to dramatically accelerate the adoption and success of the DDCC:VS specification in the real world. Practical challenges, such as precise definitions for encryption, digital signatures, and data mappings from semi-structured data (such as survey results) to structured FHIR resources will be addressed and resolved. PATH Digital Square’s investment will be applied to SantéIMS, a DPGA global good, to implement and align it with the World Health Organization (WHO) published Digital documentation of COVID-19 certificates: vaccination status (DDCC:VS): technical specifications and implementation guidance. The key output is establishing SantéIMS as showcase reference implementation of the WHO’s technical guidance in an advanced, fully integrated, person centered immunization management system. SantéMPI's Existing Functionality and Features SantéIMS, a DGPA nominated “global good” (https://digitalpublicgoods.net/registry/), is a proven, purpose-built, person-centered, holistic immunization management system and EIR platform that supports management and end-to-end delivery of any type and scale of vaccination program including pandemic response such as COVID-19 vaccination in LMICs and beyond. Its unique, fully integrated “once and done” design and functionality automates end-to-end vaccination workflows, decision support, and stock management, while at the same time seamlessly automating immunization data feedback loops, aggregate reporting and analytics from local clinic, to regional, and national levels and beyond. This complete, dedicated vaccination workflow solution has demonstrated significant improvement in efficiency of administering vaccine clinics, simplifies training requirements for clinic staff operating a vaccine clinic, speeds up interaction with patients and provides a near real-time national dashboard view of vaccination activity from local clinic to regional and national levels. A purpose-built immunization system also allows implementation of advanced clinical workflows and clinical decision support rules. SantéIMS comes pre-configured with the complete WHO vaccine schedule as default, however the schedule and clinical guideline rules are completely customizable to local country or regional needs. SantéIMS supports new clinical workflows such as COVID-19 protocols and can easily be configured support emerging immunization workflows such as HIV and malaria. SantéIMS’s first version (OpenIZ) was funded by PATH in 2016 as part of the Better Immunization Data (BID) initiative and is currently nationally deployed in Tanzania as the Tanzania Immunization Registry (TImR). *ii. Objectives and activities* The key objective is implementing support for the new WHO DDCC:VS standard in the SantéIMS platform. This investment has the potential to benefit the nearly 10 million citizens of Tanzania that have already been registered in TImR to make use of the advanced WHO DDCC:VS functionality such as vaccine passports, as well as all citizens impacted by currently planned or future deployments of SantéIMS. The associated high-level work packages will include: • Functional Requirements documentation for the various aspects of the DDCC:VS artefacts • Design documents for implementing the various aspects of the DDCC:VS artefacts • Prototype “sandbox” environment for testing and/or conformance testing online environment • Source code and documentation for DDCC:VS implementation(s) *iii.Deliverables & schedule* Functional Requirements Document for DDCC:VS Continuity of Care Scenario Month 1 Functional Requirements Document for DDCC:VS Proof of Vaccination Scenario Month 1 Core Data Set Specifications Design Document Month 1 National Trust Architecture Design Document for DDCC:VS Month 1 Continuity of Care module Design Document for SantéIMS Month 2 Proof of Vaccination Design Document for SantéIMS Month 2 National Trust Architecture prototype environment Month 2 Continuity of Care module for SantéIMS (source code + documentation) Month 3-9 Proof of Vaccination module for SantéIMS (source code + documentation) Month 3-9 National Trust Architecture & DDCC:VS conformance testing environment Month 6-12 Testing and refinement of all modules Month 6-12 Public release of source code and documentation Month 12 One of our goals in this initiative is to foster collaboration within the DDCC:VS implementation community in identifying and resolving gaps in the new DDCC:VS artefacts with respect to implementation considerations. With any new standard publication, there will be ambiguities and knowledge gaps that will exist until several implementations have been completed. With respect to the WHO Digital Documentation of COVID-19 Certificates: Vaccination Status (DDCC:VS) recommendations, SSI is offering to establish and facilitate a DDCC:VS implementation working group to identify, discuss, resolve, test, and document technical recommendations regarding the implementation of the standard. This will reduce ambiguity and ensure compatibility of implementations, ultimately reducing effort, accelerating timelines, and lowering the risk for parties wishing to implement the specification or make use of the various tools produced during this effort. For example, practical issues such as precise definitions for encryption, digital signatures, and data mappings from semi-structured data (such as survey results) to structured FHIR resources will be addressed and resolved. This will ensure that implementations from various parties will be technologically compatible and interoperable. The resulting findings and recommendations from this work will be posted for all implementers to leverage. SSI will also bring the results of this activity to appropriate standards bodies such as IHE and/or HL7 Conntectathons as deemed appropriate to gather attention to this work, to engage with additional potential stakeholders and to disseminate the results of the DDCC:VS work more broadly. The overall goal of this exercise is to dramatically accelerate the adoption and success of the DDCC:VS specification in the real world. *iv. Risk mitigation* We do not foresee any significant technical risks as the SantéIMS platform is based on a proven, functionally rich immunization solution which has been in development since 2015 and operating at national scale since 2107. The following summarizes potential risks and mitigation strategy: 1. COVID-19 Pandemic continuation or resurgence > We will continue to leverage our extensive experience and tools for working successfully, remotely with international team members, collaborating partners and stakeholders 2. Budget Risks – cost overrun or insufficient budget > Agile approach with 2-week sprints, monthly budget review, sliding priority system, rolling wave planning if possible 3. Personnel Risks – loss of personnel > Peer-programming and peer-code reviews, cross training build process, hiring staff or leveraging partner resources if needed 4. Knowledge Risks – knowledge transfer > Consortium knowledgebase setup to capture project knowledge, improved documentation 5. Productivity Risks – performance degradation > Structure deliverables to balance workloads, responsibility matrix, ensuring that work-in-progress limits are followed 6. Timeline Risks – timelines too tight or deadline slippage > Agile structured, regular sprint meetings, SCRUM certified project manager 7. Technical Risks – lengthy test correction, misunderstanding of tooling > Implement and follow formal bug and defect framework from project start, involve end-users in user interface testing