The World Health Organization said the risk to the general population appears low, based on unofficial information received about the death. Secretary of State Marco Rubio said the case was not cause for alarm but was “cause for focus.” Kazakhstan, Kyrgyzstan and Uzbekistan have tightened sanitary controls amid concerns about the possible infection.
Laboratory technician Darya Shipilova died overnight Oct. 1–2 after developing severe pneumonia. Nearly 200 contacts were identified, with 189 reportedly hospitalized for observation and five medical facilities placed under quarantine. No secondary plague cases have been confirmed. Reports that she broke a test tube containing plague bacteria remain unconfirmed; Russian health watchdog Rospotrebnadzor denied a laboratory accident and said tests found no pathogens linked to her work, describing the illness as pneumonia of unknown origin.