Polio Is Back in South Sudan Because We Left Children Unprotected

Twenty-two children in South Sudan have been struck down by paralysis from a disease the world declared on the path to extinction. Polio does not come back on its own. It comes back where children have been left unvaccinated, and where the people responsible for reaching them stayed away.

Consider a mother in Yei Town. Asinti Suzan is 28, the first-time mother of twins, and her babies were seven months old when two women in green jackets, carrying a vaccine cooler, knocked on her door in the New Site neighborhood. She did not have to be persuaded. Her husband did not hesitate either. Their words carried a bitter truth: the family had waited a long time for vaccinators to reach their neighborhood. Those twins got the drops only after months of silence from the state. How many other babies in this country are still waiting?

The Evidence

The numbers are not abstract. As of 19 October 2026, South Sudan had confirmed 18 cases of type 1 circulating vaccine-derived poliovirus (cVDPV1) and 4 cases of type 2 (cVDPV2) in children with acute flaccid paralysis, the clinical signature of polio. Environmental surveillance added further proof of spread, with two cVDPV1 isolates and two cVDPV2 isolates found in samples from the environment. The virus is not a rumor. It is circulating in water, in soil, and in children's bodies.

Two strains of the disease, two rounds of outbreaks, and one question that every South Sudanese should be asking: why did a weakened vaccine virus get the chance to circulate in the first place? The World Health Organization's own explanation is blunt. Vaccine-derived polio emerges when the weakened virus from oral polio vaccine spreads for an extended period through under-immunized populations. In plain language, it thrives where children are missed. Every missed child is an open door.

The Ministry of Health, backed by the WHO, UNICEF, and partners, launched the nationwide first round between 13 and 16 October 2026, targeting approximately 3.8 to 3.9 million children under five. By 19 October, 73 counties had completed the round, six were still working, and one had not started at all because of access problems. More than 3.3 million children had received both novel oral polio vaccine type 2 (nOPV2) and bivalent oral polio vaccine (bOPV). That is roughly 84 percent of the national target. Respectable progress, but 84 percent still leaves hundreds of thousands of children exposed. The virus does not respect a percentage. It needs only one unprotected child to keep moving.

Behind the figures are conditions no ministry should be proud of. Insecurity, mass displacement, and communities that are hard to reach have made every vaccine drop a logistical battle. Vaccinators walk door to door through remote villages and settlements, hunting for children who were skipped in the first pass. Health workers and volunteers are doing heroic work. But heroism should not be the substitute for a functioning health system. A country should not depend on individual courage to keep its children alive.

The Context

South Sudan is not failing alone, and it is not the only African state where polio has been allowed to resurface. Across the continent, outbreaks of vaccine-derived polio have followed the same script: fragile governance, weak primary health care, and a lack of accountability for who gets reached and who does not. When a state cannot protect its children from a disease that was nearly eradicated, the failure is not technical. It is political.

This is the uncomfortable truth our leaders prefer to bury. A government that cannot deliver vaccines to its own toddlers is a government that has chosen other priorities. Salaries for the well-connected, security budgets that never reach the frontier, and procurement contracts that vanish into opaque channels all have a cost, and that cost is paid in the bodies of children who cannot walk.

We also have to be honest about who is funding the fight. The campaign was made possible by the Global Polio Eradication Initiative and donors including King Salman Humanitarian Aid and Relief Center, Rotary International, the Mohamed bin Zayed Foundation for Humanity, the Gates Foundation, and the European Investment Bank. We should thank them without reservation. Their money saves lives. But external donors cannot be a permanent replacement for national responsibility. A country that outsources its immunization program is a country that has not yet decided its children matter.

The Solutions

The path forward is not mysterious. It is the same path that has worked in the African countries that refused to accept mediocrity in public health. Mauritius and Botswana, for all their differences, built their health gains on competent administration, transparent budgets, and institutions that answer to citizens. Rwanda, whatever we say about its military adventurism abroad, has built a community health worker system that reaches households at the village level. The lesson for South Sudan is that routine immunization must become boring and reliable, not a heroic emergency every few years.

That means three concrete things. First, the government must publish district-level immunization coverage data every quarter, so that parents, legislators, and journalists can see which counties are being missed and demand answers. Sunlight is the cheapest vaccine a democracy can administer. Second, the Ministry of Health should ring-fence a predictable share of its budget for routine immunization and cold-chain logistics, with audits by an independent body rather than by officials who have a stake in the outcome. Third, civil society, faith groups, and local radio should be given the space to mobilize communities and to report when vaccinators fail to appear. Private sector actors, from transport firms to telecom companies, can help with last-mile delivery and real-time tracking of vaccine stocks.

Regional bodies also have a role. The African Union and regional economic communities should treat cross-border polio transmission as a shared security threat, because a virus does not need a passport. Coordination on surveillance and vaccine stocks between neighboring states is not charity. It is self-interest with a conscience.

The Call to Action

To the Government of South Sudan: stop treating the next vaccination round as an achievement to celebrate and start treating it as an admission of how long you have failed. Publish the county-by-county figures. Explain why one county has still not started. Fund the second round in November in full, not in part, and guarantee that the vaccinators reach the children who were missed. Your legitimacy depends on whether a mother in Yei Town can trust that the next knock on her door is not the last one that ever comes.

To the donors, including the Gulf foundations and European institutions that have stepped in: keep funding, but insist on transparent reporting and a clear handover plan to national systems. Charity that never ends is not development.

To the citizens of South Sudan: demand the numbers. Ask your county commissioner why the vaccinators have not reached your street. Ask your members of parliament what they have done to fund routine immunization in their constituencies. Hold the state to the standard it set for itself when it promised to stop transmission.

To the rest of us across Africa: a child paralyzed by polio in Juba is a child paralyzed in Lagos, Nairobi, and Kinshasa in every way that matters. We are one continent, and our children share the same risks. Let South Sudan's outbreak be the alarm that wakes every African government from its complacency.

We were promised a polio-free future. Make the state keep that promise, one child at a time.

Based on reporting by RELIEFWEB