The claims of plague in Russia has been denied by the country. They have issued a clarification in this regard to the World Health Organization (WHO).
A suspected case of pneumonic plague in Russia has put the serious bacterial disease back in the spotlight. It is further reported that, people who may have been exposed have reportedly been placed under medical observation. Quarantine measures are being enforced across hospitals in Siberia.
A researcher in Russia died after breaking a test tube containing live plague bacteria. In response to this, Russian authorities placed nearly 200 people under medical quarantine.
The 28-year-old technician at the Irkutsk Anti-Plague Institute, reportedly passed away on October 2, 2026. She was hospitalized with severe pneumonia-like symptoms and placed on a ventilator, but succumbed to the infection.
However the claims have been denied by Russia.
Plague In Russia, WHO Issues Press Brief
WHO has been actively following up on the reported death of a laboratory worker at the Irkutsk Antiplague Research Institute in Irkutsk oblast, Russian Federation. The individual died on 2 October 2026 after being hospitalised with severe pneumonia. Initial media reports suggested pneumonic plague following an alleged accidental laboratory exposure.
In response to WHO’S verification request under the
International Health Regulations, the Russian health authorities reported that no case of plague had recently been registered in Irkutsk oblast.
They informed WHO that an epidemiological investigation had been conducted, preventive and control measures implemented, and identified contacts placed under medical observation and tested. They reported that no high-threat pathogens had been detected among the contacts and that medical observation of all identified contacts had been completed.
WHO has remained in contact with the Russian health authorities and has offered technical support. WHO has requested further information to clarify the cause of the severe pneumonia, the pathogen that prompted the public health measures, and media reports of a second employee with pneumonia of undetermined cause.
Timely, complete and transparent information sharing under the International Health Regulations is essential to clarify conflicting reports and enable an accurate assessment of potential public health risks.
