US Monitoring Case of Lab Worker Who Died After Incident at Plague Research Institute in Siberia

The US Secretary of State, Marco Rubio, stated that the US is closely monitoring the case of Darya Shipilova, a 28-year-old laboratory worker who died following an incident at a plague research institute in Siberia. Rubio commented on October 5, 2026, that while there is no cause for alarm, the situation warrants attention. Shipilova fell ill at work and died two days later on October 2 at a regional hospital in Shelekhov. The cause of her illness remains unclear, with unconfirmed reports suggesting she may have been infected during a laboratory mishap. Local media reported that the institute has been locked down, with over 60 staff members isolated. A relative of Shipilova indicated that family members could only drop off food at a checkpoint while tests were conducted. Rubio noted concerns about potential internal spread of the disease. Conflicting messages from Russian officials have added to public concern; the head of the Buryatia region initially stated Shipilova died of plague but later revised this to say it was a possibility. Rospotrebnadzor, Russia’s health watchdog, reported that Shipilova died from pneumonia of unknown origin and claimed no microorganisms related to her work were found. Precautionary measures have been implemented in the region, including quarantines at several hospitals in Irkutsk. Reports indicate that staff from Shipilova’s workplace have been confined to the institute since October 2. Local hospitals have restricted visitor access, and residents have reported increased health screenings. Anna Popova, head of Rospotrebnadzor, visited Irkutsk to address the situation, and Igor Kobzev, the governor of the Irkutsk region, urged calm, stating that all identified contacts are under medical observation and showing no signs of illness. Concerns have been raised by US politicians regarding the incident, particularly in light of previous allegations by the Kremlin about biological weapons research in Ukraine. Plague is endemic in parts of Siberia, but human cases are rare, with the last recorded infection in Russia occurring in 2016. Experts suggest that this incident appears to be a rare laboratory accident and that the potential for further spread is limited.