Uganda and four other African countries have been cleared of recent polio outbreaks after independent assessments found no evidence that the virus is still spreading. The World Health Organization (WHO) said Burundi, Ghana, Guinea-Bissau, the Republic of Congo and Uganda had successfully interrupted transmission of poliovirus type 2. Despite the milestone, officials emphasized the need for sustained vigilance and vaccination efforts to prevent future outbreaks.
A Major Milestone in Uganda’s Polio Fight
Uganda’s declaration as free of the latest polio outbreak marks a significant step in the country’s long-term efforts to protect children from a virus that can cause permanent paralysis. The World Health Organization (WHO) announced the decision following technical assessments conducted by teams from the Independent Outbreak Response Assessment (OBRA) between January and June this year. These evaluations reviewed disease surveillance, laboratory results, and epidemiological data before concluding that transmission had stopped. The announcement comes after Uganda detected poliovirus in May 2024, prompting health authorities to strengthen surveillance and outbreak response activities. The WHO further stated that Burundi, Ghana, Guinea-Bissau, the Republic of Congo and Uganda had successfully interrupted transmission of poliovirus type 2, according to assessments carried out by OBRA teams.
Uganda declared free of latest polio outbreak
The Role of Surveillance and Vaccination
The closure of the outbreak was not merely a technical decision based on evidence that transmission has stopped. Uganda upgraded its laboratory capacity earlier this year, strengthening its ability to detect poliovirus and other vaccine-preventable diseases. The assessment also looked not only at whether new cases had been detected, but also at the strength of Uganda’s surveillance systems and the level of immunity among the population. While this is an important milestone, it is not the end of the journey, said Dr Mohamed Janabi, WHO Regional Director for Africa. Continued vigilance, strong surveillance and high immunization coverage remain essential to protect children and prevent future outbreaks. While this is an important milestone, it is not the end of the journey,
Janabi said. Continued vigilance, strong surveillance and high immunization coverage remain essential to protect children and prevent future outbreaks.
Challenges and Lessons from the Response
Uganda’s response involved coordination between national and local health authorities, vaccination activities and efforts to identify possible cases and virus circulation. The country’s experience highlights the importance of finding cases quickly and vaccinating children before the virus has a chance to spread. In the broader African context, the success of Uganda’s efforts aligns with the strategies used by other nations, such as the Republic of Congo, where authorities strengthened surveillance and carried out several vaccination campaigns after poliovirus was detected. The WHO has emphasized that vaccination must reach children who are most likely to be missed, while health workers must be able to identify possible infections quickly. Uganda detected poliovirus in May 2024, prompting health authorities to strengthen surveillance and outbreak response activities.
Polio appears again in Africa
The Path Forward
Despite the declaration, health officials say the country cannot afford to relax its vaccination and disease surveillance efforts. Polio is a highly infectious viral disease that mainly affects children, and the virus can cross borders, making surveillance particularly important in countries with large movements of people. The recent detection of poliovirus in Madagascar after an earlier outbreak closure is a reminder of that risk, WHO said. Uganda’s experience underscores the need for continued vigilance, strong surveillance and high immunization coverage. The quality of the vaccination campaign is essential to interrupt transmission of poliovirus from child to child. Therefore it is critical to ensure that the vaccination rounds reach every child. In August 2021, Uganda’s Health Ministry confirmed an outbreak of polio and declared it a public health emergency in the country, following confirmation of lab tests from samples in the capital Kampala.
Global Implications and Continued Efforts
The success in Uganda contributes to broader global efforts to eradicate polio. In August 2020, Uganda and the entire African continent were certified by the World Health Organization as wild polio virus-free. However, outbreaks of vaccine-derived polio continue in some countries. The WHO and partners like the Global Polio Eradication Initiative (GPEI) continue to support nations in strengthening surveillance and immunization programs. Uganda’s case demonstrates the effectiveness of coordinated responses, but it also highlights the ongoing challenges of maintaining high vaccination coverage, especially in areas with difficult access or low community trust in health services. In January 2022 soon after Malawi received preliminary results of poliovirus, the Ministry of Health, with support from World Health Organization (WHO), swiftly launched response measures, collecting additional stool samples from contacts of the index case, and shipping them for further analysis, as well as actively searching for possible new cases.
Ramping up polio outbreak response in southern Africa
Additional Context from the African Region
Africa has been declared free from wild polio, after decades of work by a coalition of international health bodies, national and local governments, community volunteers and survivors. The Africa Regional Certification Commission (ARCC) made the declaration, recognizing the persistence of efforts despite challenges like vaccine skepticism and attacks on health workers.
Conclusion
Uganda’s achievement reflects the effectiveness of targeted public health measures but also underscores the fragility of progress. The fight against polio requires sustained commitment, community engagement, and international collaboration to ensure that no child is left vulnerable to this preventable disease.
