The Bundibugyo strain of the Ebola pathogen: What do we know?

Published on May 29, 2026
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A rare strain of Ebola has prompted the World Wellbeing Organisation  (WHO) to declare a general wellbeing urgent condition of global concern.

The Bundibugyo strain of the Ebola pathogen: What do we know?
An illustrative image related to: The Bundibugyo strain of the Ebola pathogen: What do we know?, highlighting key aspects of the story. | Image source: The Express Tribune

The Bundibugyo strain of the Ebola pathogen: What do we know?

A rare strain of Ebola has prompted the World Wellbeing Organisation  (WHO) to declare a general wellbeing urgent condition of global concern. Most of the cases have occurred in the Democratic Republic of Congo (DRC), with more than 100 suspected deaths and nearly 400 suspected infections as of Monday.

Here is what we know about ​this strain of the Ebola pathogen, known as Bundibugyo.

The current Ebola outbreak — so far limited to the Democratic Republic of ‌the Congo and Uganda — is due to a rare strain of the pathogen known as Bundibugyo, named after Uganda’s Bundibugyo territory, where it was first identified during an outbreak in 2007-2008. A second Bundibugyo outbreak occurred in 2012 in the DRC.

A Congolese wellbeing worker checks the temperature to screen a traveller at the Grande Barrier frontier following confirmation of an Ebola outbreak involving the Bundibugyo strain, at the frontier crossing point between Congo and Rwanda, in Goma, Democratic Republic of Congo, May 18, 2026.PHOTO: REUTERS

Bundibugyo kills 30% to 40% of infected individuals, making it less lethal than the more common Zaire strain, which causes death in up to 90%, according ​to a global study published in 2024.

Bundibugyo is one of the four species of the ebolavirus genus that cause life-threatening illness in humans. All Ebola viruses are ​transmitted through direct contact with the bodily fluids of infected animals or humans or objects contaminated with such fluids.

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Source: Original News

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