Irkutsk Lab Worker Dies After Severe Pneumonia

A 28-year-old worker at Siberia’s Irkutsk Anti-Plague Research Institute died after developing severe pneumonia. Russian authorities placed nearly 200 people under medical observation and introduced precautionary quarantine measures at medical facilities; contacts showed no symptoms and tested negative. Local reports said she may have broken a test tube containing plague bacteria, but officials have not confirmed a lab accident or plague infection, and Russia’s public health agency said tests detected no organisms linked to her work. Officials described the cause as unknown and said the regional health situation was stable. The White House said it was monitoring reports as authorities investigated.