Worker dies from unknown pneumonia at Siberian plague institute

Russian authorities report that an employee at a plague research institute in Siberia contracted pneumonia of unknown cause and died, prompting quarantine measures at a local hospital and monitoring of her contacts. The woman worked at the Irkutsk Anti-Plague Research Institute in southeastern Siberia, and state TV reported her death last week. Officials said extensive testing found no pathogens linked to her professional activities, though unconfirmed reports suggested pneumonic plague. The hospital in Shelekhov has been quarantined, and Russia's public health chief flew to the region to oversee anti-epidemic measures. U.S. officials are monitoring the case, while the Kremlin urged the public to rely on official statements rather than speculation.