Dear Colleagues, Health professionals are increasingly stepping into leadership roles—often in complex systems with limited resources and high expectations. Yet structured opportunities to reflect on leadership practice remain rare. Over the past year, I’ve facilitated the Leadership Masterclass w...

A new JSI article on Gavi's VaccinesWork platform synthesizes findings from the Zero-Dose Learning Hub across Bangladesh, Mali, Nigeria, and Uganda, and makes a compelling case that the field's default approaches to reaching zero-dose children are incomplete without corresponding attention to subdis...

What does it actually cost to reach every zero-dose child? Immunization programs can face challenges in planning and budgeting if they lack rigorous, bottom-up costing data for targeted interventions, particularly those designed to reach missed and under-immunized children. To help address this gap...

Asking whether an intervention worked is not enough. Immunization programs also need to understand how and why change occurred, especially when reaching zero-dose and under-immunized children in complex settings. The Zero-Dose Learning Hub’s new Theory-Based Evaluation Toolkit supports governments ...

A recent VaccinesWork blog post reflects on the Zero-Dose Learning Hub’s accomplishments during 2025, highlighting how implementation research was translated into practical tools, guidance, and shared learning. Drawing on experience from Bangladesh, Mali, Nigeria, and Uganda, the blog post shows how...

The Zero-Dose Learning Hub has updated its collection of implementation research synthesis and posted the final semiannual reports from Bangladesh, Mali, Nigeria, and Uganda. These resources move beyond high-level theory to examine the specific drivers of under-immunization and the delivery strategi...

Reaching zero-dose children requires evidence that can be applied in real programs and policy decisions. A new post on Gavi’s VaccinesWork blog shows how the Zero-Dose Learning Hub is translating implementation research from Bangladesh, Mali, Nigeria, and Uganda into practical tools and insights tha...

Dear colleagues,   I am pleased to share our recent publication evaluating the use of mobile-money payments during Côte d’Ivoire’s October 2023 national polio immunization campaign. The study analyzes the financial implications of shifting from cash to digital disbursement and provides eviden...

The Zero-Dose Learning Hub has launched a new toolkit to help country teams, partners, and technical groups apply theory-based evaluation to strengthen immunization programming. The resource offers practical guidance on developing and revisiting theories of change, clarifying assumptions, and mappin...

How to classify between primary and secondary vaccine failure? Can some one help respond? Thanks...

The Immunization Economics Community of Practice are holding a webinar on 10 December 2025 at 15:00 Central European Time on the cost of reaching zero-dose children, click here to register now! Presenters will share a global synthesis of the evidence on the cost of reaching zero-dose children, as w...

Come learn how implementation research is helping immunization programmes reach zero dose children! Under the MAINSTREAM project, the Alliance for Health Policy and Systems Research and the Immunization, Vaccines and Biologicals Department at WHO in collaboration with local mentor institutes have...

Dear Madam/Sir,   This is to inform you that WHO published, on 21 November 2025, an RFP named  Long Term Agreement for the provision of Technical Support to SAGE Executive Secretariat ref [WHO-SHQ-RFP-25-3063] The RFP is published on the United Nations Global Market website here,&n...

The World Health Organization (WHO) has released an updated Position Paper on Pneumococcal Conjugate Vaccine (PCV) vaccination, introducing new recommendations on dose-reduced schedules, including the 2-dose “1p+1” schedule (one primary dose plus one booster dose). While th...

  On behalf of the HISP Centre at the University of Oslo, we invite you to join this exciting webinar!Webinar: DHIS2 Climate and Health Tools for Planning and Monitoring Immunization ProgrammesWednesday, 29 October, 13:00-14:00 CETRegistration: https://dhis2.org/events/climate-and-healt...

Over 50 new vaccine options have launched in less than a decade — an unprecedented opportunity for governments to optimise routine immunisation: ✅ higher coverage ✅ reduced costs ✅ better cold chain use ✅ stronger supply security Despite this progress, uptake remains difficult to predict—especially ...

Explore the WHO Vaccination Information Hub! Access trusted information and practical resources on vaccines, all on a new webpage.On the Hub, you’ll find: ✅  Easy-to-understand explanations of how vaccines work, why they’re safe, how they’re developed, and more! 🛠️  Practical t...

Dear Colleagues, In the familiar Rivimba Delta, fragile systems, insecurity, and stretched supply lines meet urgent public health demands. One cold chain, one fleet, one community, four simultaneous threats. 📌 This week’s edition of Immunization for Resilience Newsletter explores: 🔻How to run one...

When it comes to reaching zero-dose children, even well-designed programs can fall short. A political economy analysis (PEA) can offer program implementers a fresh lens to understand how governance, power dynamics, and institutional behavior influence efforts to reach missed communities.The Gavi-fun...

The new WHO Standard case definitions for acute bacterial meningitis and invasive meningococcal disease for routine and outbreak surveillance have been recently published. The main document is available here: Standard case definitions of acute bacterial meningitis and invasive mening...