The World Health Organization (WHO) has declared the Ebola outbreak in Congo and Uganda a public health emergency of international concern after 300 suspected cases and 88 deaths. The current surge is caused by the Bundibugyo virus,a rare variant with no approved therapeutics or vaccines. This marks only the third recorded outbreak of this strain.

The Bundibugyo virus: A familiar foe with new challenges

The Bundibugyo virus, first identified in 2007, is back in the spotlight. Unlike the more common Zaire Ebola virus, which has seen experimental vaccines deployed in past outbreaks, this variant has no approved prevention or treatment options. According to the WHO, the current outbreak has already surpassed previous Bundibugyo cases in scale, with 300 suspected infections reported.

Health authorities face a dual challenge: containing a virus with unique genetic traits while adapting strategies from previous Ebola responses. The WHO's declaration aims to mobilize international support, but experts warn that past emergencies have seen uneven global responses.

Lessons from 2022: Will history repeat itself?

Critics point to the WHO's handling of the 2022 mpox outbreak as a cautionary tale. Despite the emergency declaration, resources were slow to reach affected regions, leaving communities vulnerable. As WHO Director-General Tedros Adhanom Ghebreyesus noted in his Twitter announcement, this Ebola outbreak does not meet the criteria of a pandemic like COVID-19, but the stakes remain high for local populations.

The WHO has advised against closing international borders, emphasizing targeted containment measures. However, the lack of approved vaccines for the Bundibugyo strain complicates efforts to protect healthcare workers and first responders.

Unanswered questions: Where did the virus re-emerge?

While the WHO has confirmed the Bundibugyo variant's role in the outbreak, key details remain unclear. The source of the resurgence—whether from animal reservoirs or human transmission chains—has not been publicly identified. Additionally , the WHO has not disclosed which regions in Congo and Uganda are most affected, leaving gaps in the public understanding of the outbreak's spread.

As the death toll rises, the international community watches closely. Will this declaration spur faster acttion than in 2022? And can health systems adapt quickly enough to a virus with no existing countermeasures?