## A Renewed Pledge for a Polio-Free Future in the Horn of Africa and Yemen Leaders from several nations in the Horn of Africa and Yemen have recently come together with a powerful commitment: to put an end to the transmission of variant poliovirus within their borders. This vital pledge, made during an interministerial meeting held alongside the Seventy-ninth World Health Assembly in Geneva on May 20, 2026, signals a renewed push in one of the globe's most challenging regions for disease eradication. Ministers of Health and senior government representatives from Djibouti, Ethiopia, Kenya, Somalia, South Sudan, and Yemen united, alongside key international partners, to bolster cross-border coordination, sharpen disease surveillance, and synchronize vaccination campaigns. The goal is clear: to stop this debilitating virus in its tracks, protecting countless children from a preventable disease. ### Understanding the Threat: Variant Poliovirus Explained Polio, or poliomyelitis, is a highly infectious disease caused by the poliovirus. It primarily affects young children and can lead to irreversible paralysis, and in some cases, death. The virus spreads mainly through the fecal-oral route, often through contaminated water or food. While wild poliovirus has been largely contained globally, the emergence of 'variant poliovirus' presents a persistent challenge. These variant strains, known as circulating vaccine-derived polioviruses (cVDPVs), can occur in populations with low vaccination rates. When children are vaccinated with the oral polio vaccine (OPV), a weakened live virus is excreted in their feces. In areas with poor sanitation and insufficient immunization coverage, this weakened virus can circulate for an extended period, mutate, and eventually regain its ability to cause paralysis. This is why maintaining high vaccination coverage is absolutely crucial – it prevents both the original virus and these dangerous variants from spreading and evolving. Specifically, the region is grappling with both circulating variant poliovirus type 1 (cVDPV1) and type 2 (cVDPV2). The distinction between types is important for targeted vaccination responses. The ongoing outbreaks, particularly the prolonged cVDPV2 outbreak in Somalia since 2017 and Yemen’s significant cVDPV2 outbreak that has paralyzed 452 children since 2021, underscore the urgent need for these renewed efforts. Most of the affected children in Yemen are in the northern governorates, highlighting specific areas where immunity gaps are most critical. ### A Region Under Pressure: Why Eradication is So Difficult Here The Horn of Africa and Yemen form one of the most complex subregions for public health interventions, especially when it comes to infectious diseases like polio. Several factors contribute to this difficulty: * **Extensive Population Movement:** The region is characterized by porous borders and high mobility, meaning the virus can easily travel between countries with people. This constant movement makes it incredibly hard to track the virus and ensure consistent vaccination coverage. * **Humanitarian Crises and Insecurity:** Ongoing conflicts, displacement, and humanitarian emergencies disrupt healthcare systems, making it challenging to deliver essential health services, including routine immunization. Access to certain areas can be dangerous or impossible for health workers. * **Persistent Immunity Gaps:** A direct consequence of the above challenges is that many children remain unvaccinated or under-vaccinated. These 'immunity gaps' create fertile ground for the poliovirus, including its variant forms, to spread widely and cause outbreaks. Areas with high concentrations of 'zero-dose children' – those who have never received a single vaccine – are particularly vulnerable. ### Glimmers of Hope: Progress Amidst Adversity Despite the formidable challenges, the meeting highlighted significant strides made through collaborative efforts. These successes offer a powerful testament to the effectiveness of coordinated action: * **Kenya's Success:** A major win for the region, Kenya has reported no poliovirus cases since July 2024, demonstrating that sustained effort can lead to tangible results. * **Ethiopia's Reduction:** Ethiopia saw an impressive 98% reduction in detections of circulating variant poliovirus types 1 and 2 during 2025, indicating that intensified response measures are working. * **Djibouti's Clean Slate:** Djibouti has not detected any variant poliovirus types 1 or 2 since May 2025, following a concerted and aggressive response. * **Proactive Campaigns:** Ethiopia and South Sudan recently launched synchronized vaccination campaigns after cVDPV1 was found near their shared border. This proactive measure exemplifies the crucial role of cross-border collaboration in preventing wider spread. These achievements underscore that while the path to eradication is difficult, it is far from impossible when countries work together with determination and shared purpose. ### The Path Forward: Key Strategies and Commitments Ministers and representatives at the meeting outlined critical strategies to accelerate progress. Central to these is the concept of robust collaboration and shared responsibility: * **Enhanced Vaccination Quality:** Countries committed to conducting high-quality vaccination campaigns, ensuring that every child is reached, vaccines are properly administered, and records are meticulously kept. This also means strengthening routine immunization programs, integrating polio vaccination into broader health services to ensure sustained protection. * **Closing Immunity Gaps:** A priority is reaching underserved populations, including those in border communities, remote rural areas, insecure settings, and mobile groups, who often miss out on vaccinations due to various barriers. * **Strengthened Surveillance:** Improving poliovirus surveillance is vital for early detection and rapid response. This includes expanding community-based surveillance in hard-to-reach areas and utilizing environmental surveillance (like testing wastewater) to detect the virus even before cases of paralysis emerge. * **Cross-Border Coordination:** This remains paramount. The continuous movement of people across borders necessitates synchronized planning and implementation of vaccination campaigns and surveillance activities between neighboring countries. The involvement of regional bodies like the Intergovernmental Authority on Development (IGAD) is crucial in facilitating this coordination. * **Accountability and Ownership:** Ministers emphasized taking greater national ownership of eradication efforts, fostering accountability, and improving access to hard-to-reach communities. ### Overcoming Financial Hurdles and Partner Support The ambitious goal of polio eradication faces significant financial headwinds. The current global health financing environment is challenging, with declining external funding for polio programs. This reality led ministers to underscore the importance of increased domestic resource mobilization, advocating for countries to prioritize and efficiently implement activities despite operational pressures such as fuel shortages, rising costs, and competing public health priorities. Sustained political commitment is essential, especially when resources are scarce. As Dr. Mohamed Janabi, WHO Regional Director for Africa, stated, “At a time of competing health emergencies and financial pressures, we cannot lose sight of what is at stake: protecting every child.” The Global Polio Eradication Initiative (GPEI), a public-private partnership led by national governments and key organizations like the WHO, Rotary International, the U.S. Centers for Disease Control and Prevention (CDC), UNICEF, and the Bill & Melinda Gates Foundation, remains a crucial force. Partners like the King Salman Humanitarian Aid and Relief Center and the Mohammad bin Zayed Humanitarian Foundation continue to provide vital support, helping countries strengthen immunization and move closer to a polio-free world. Leaders also highlighted the importance of leveraging broader health initiatives, such as Gavi's rollout of hexavalent vaccines, to expand protection against multiple preventable diseases. ### The 2027 Vision: A Polio-Free Horizon The overarching target is to stop poliovirus transmission in the Horn of Africa and Yemen by the end of 2027. Achieving this will require unwavering dedication, innovative strategies, and continued international and domestic investment. The collective reaffirmation of commitment from all stakeholders—governments, international organizations, and local communities—is a powerful step towards safeguarding children from this devastating disease. As the meeting concluded, the message was clear: no country in the region should be left behind in the global effort to achieve a polio-free world, ensuring every child has the chance to live a healthy life free from the specter of paralysis.