Polio Outbreak Declared in Zambia After Virus Detection in Lusaka

LUSAKA, Feb. 24, 2026 – Zambia has officially declared a polio outbreak following the detection of the poliovirus in wastewater samples collected from Lusaka, the nation’s capital. The announcement, made Tuesday by Acting Minister of Health Cornelius Mweetwa, triggers a public health response to prevent further spread of the virus.

Virus Detected Through Environmental Surveillance

The poliovirus type 2 was identified through Zambia’s routine environmental surveillance system, which monitors wastewater for the presence of the virus. Notably, as of Tuesday, no confirmed cases of paralysis linked to the virus have been reported within the country according to a press statement from the Ministry of Health.

Regional Concerns and Virus Origin

The detection in Lusaka is part of a broader regional concern, as circulating poliovirus has also been identified in neighboring countries, including Malawi, Zimbabwe, Angola, and Namibia as reported by Channel Africa. The virus detected in Lusaka shares similarities with strains previously found in Namibia and linked to Angola according to Lusaka Times, indicating a potential cross-border transmission.

Government Response and Vaccination Efforts

The Zambian government has activated a national poliovirus response management system to coordinate containment efforts. Key measures include:

• Intensified Surveillance: Enhanced monitoring for Acute Flaccid Paralysis (AFP) cases to quickly identify any potential infections.
• Environmental Sampling: Increased sampling of environmental sources, like wastewater, to track the virus’s spread.
• Risk Communication: Public awareness campaigns to educate citizens about polio prevention, particularly the importance of vaccination.
• Vaccination Campaigns: Planned vaccination campaigns targeting all children under the age of five in high-risk areas, in collaboration with the World Health Organization (WHO).

Zambia’s Polio History

Whereas Zambia last recorded an indigenous wild poliovirus case in 1995, the country has periodically detected circulating poliovirus since then, with the most recent case reported in December 2023 as stated by Acting Minister of Health Cornelius Mweetwa. This latest detection underscores the ongoing necessitate for vigilance and proactive public health measures.

Key Takeaways

• Polio has been detected in environmental samples in Lusaka, Zambia.
• No cases of paralysis have been confirmed as of February 24, 2026.
• The virus is circulating in several Southern African countries.
• The Zambian government is implementing a comprehensive response plan, including vaccination campaigns.