A laboratory worker's death has occurred after hospitalization for severe pneumonia. The worker was from the Irkutsk Antiplague Research Institute. Initial reports indicated a possible case of pneumonic plague due to accidental lab exposure.

Further information was requested by the WHO following these reports. The Russian Federation responded, stating that no recent plague cases were reported. Details of the incident and subsequent response are available from the source, including actions taken by the Russian government and the WHO.