Russian plague researcher's death puts 200 under observation in Irkutsk

Nearly 200 people are under medical observation in Russia's Irkutsk region following the death of a researcher from an unspecified form of plague, according to local media reports. The deceased was an employee at an anti-plague research institute in Irkutsk who had returned from a work trip to Buryatia, where an outbreak was reported near the Mongolian border. Russia's health watchdog said she had pneumonia of unknown etiology, and expanded testing found no microorganisms linked to her work. The White House is monitoring the suspected case and related quarantines, according to a Trump administration official. Russian health ministries, the World Health Organization, and the U.S. State Department did not immediately respond to requests for comment.