Russian Officials Retract Plague Diagnosis After Lab Technician’s Death

Overview

• Local outlets and regional officials reported that a 28-year-old laboratory technician, identified as Daria Chipilova, fell ill after working at the Irkutsk anti-plague institute, was hospitalized on Sept. 29 and died overnight on Oct. 1–2.
• Rospotrebnadzor and a regional expert commission later said the cause was an indeterminate pneumonia and that analyses detected no microorganism linked to her work, and officials have described the regional situation as stable.
• Local reports said up to about 200 contacts and multiple hospitals and universities were placed under quarantine and some workplaces required masks, though those containment details have not been independently verified.
• The case sparked international attention: U.S. agencies including the CDC were notified, the U.S. government said it was monitoring the situation closely, and President Trump offered assistance.
• Public-health experts and coverage note that plague persists in wildlife in parts of Russia but is treatable with antibiotics, and they warn that any lab safety lapses or antibiotic‑resistant strains would raise greater risk and require further investigation.