White House puts suspected Russian plague outbreak on watchlist
The White House is monitoring a suspected pneumonic plague outbreak in Russia after a Siberian laboratory worker died amid conflicting reports about the cause.
A Trump administration official told Axios on October 4 that Washington was aware of the incident, tracking developments and assessing potential responses. US officials urged Moscow to promptly release accurate information about the researcher’s death.
Independent Russian media outlet Lyudi Baikala reported that Darya Shipilova, a 28-year-old employee at the Irkutsk Anti-Plague Research Institute, accidentally broke a test tube containing the bacterium responsible for pneumonic plague on September 25.
She was admitted to hospital in Shelekhov, a town outside Irkutsk, on September 29 with severe pneumonia and succumbed to the illness early on October 2.
Conflicting claims and political response
Russian authorities have not confirmed a laboratory accident or verified that plague caused the death. The national public health watchdog, Rospotrebnadzor, disputed the media reports and stated Shipilova was diagnosed with pneumonia of unknown origin. The agency claimed additional testing found no microorganisms linked to her professional activities and described the epidemiological situation in the region as stable.
Despite these denials, the incident triggered precautionary measures across several regional health care facilities. Nearly 200 potential contacts were quarantined or placed under medical observation. Irkutsk Governor Igor Kobzev said those monitored had tested negative and shown no symptoms.
The suspected outbreak has drawn political attention in Washington. Former Rep. Adam Kinzinger urged a suspension of flights involving Russia until authorities clarify the situation, while Republican Rep. Don Bacon questioned the nature of Moscow’s biological research activities.
Pneumonic plague is particularly dangerous, as it affects the lungs and spreads directly between people through respiratory particles. Modern antibiotics are highly effective when administered early, but the infection can rapidly become fatal if left untreated.
According to the World Health Organization, pneumonic plague is one of three main forms of the disease alongside bubonic and septicaemic variants. Most human cases reported between 2019 and 2025 have been concentrated in Madagascar and the Democratic Republic of the Congo.
