Archive · 6 Oct 2026
Siberian Institute Worker’s Death Prompts Plague Concerns and Monitoring
A worker at a research institute in Siberia became very sick and died.
Officials said she had pneumonia, but they did not know what caused it.
Local media named her as Darya Shipilova and said she was 28.
Some reports suggested she may have been exposed to plague bacteria at work, but Russian authorities said they found no evidence of an accident.
Russia has not confirmed that she had plague.
People who may have been in contact with her were quarantined or watched by health officials.
Reports gave different numbers, ranging from dozens to almost 200.
Russian officials said the contacts had no signs of infectious illness.
The United States is monitoring the case, but Marco Rubio said it was not cause for alarm.
A 28-year-old worker at the Irkutsk Anti-Plague Research Institute died after developing pneumonia of unknown cause.
Local media identified her as Darya Shipilova; accounts differed about where and how she became ill.
Russian authorities said they found no evidence of a pathogen-handling accident and have not confirmed that she had plague.
Reports said dozens to almost 200 contacts were quarantined or placed under observation; officials said testing found no other infectious diseases and contacts showed no signs of illness.
U.S. Secretary of State Marco Rubio said Washington was monitoring the case but did not consider it cause for alarm.
- Who
- A 28-year-old worker at the Irkutsk Anti-Plague Research Institute, identified by local media as Darya Shipilova.
- What
- She died after developing pneumonia of unknown cause; possible contacts were quarantined or placed under medical observation.
- When
- She died last week; U.S. Secretary of State Marco Rubio commented on Monday.
- Where
- The Irkutsk region of Siberia, Russia; she died at a hospital in Shelekhov, according to reports.
- Why
- Authorities took precautionary measures after her death and reports of possible exposure, but said they found no evidence of a lab accident or confirmed plague.
Exposure concerns and reports
Russian authorities’ findings
Possible laboratory exposure
Exposure concerns and reports
Some Russian media reports said the worker may have been exposed to plague bacteria after a test tube broke at the institute.
Russian authorities’ findings
Rospotrebnadzor disputed that account, saying investigators found no evidence of an accident involving pathogens or microorganisms associated with her work.
Possible plague infection
Exposure concerns and reports
Reports of a possible exposure and her death prompted public concern; one regional governor was reported to have said she may have died from plague.
Russian authorities’ findings
Authorities described her illness as pneumonia of unknown cause, and Russia has not confirmed that she had plague.
Risk to contacts
Exposure concerns and reports
Reports said dozens to almost 200 people who may have been in contact with her were quarantined or placed under observation; the United States said it was monitoring the case.
Russian authorities’ findings
Russian officials said known contacts were identified, examined and tested, none had signs of infectious illness, and the situation was under control.
- Worker
- A 28-year-old woman identified by local media as Darya Shipilova
- Workplace
- Irkutsk Anti-Plague Research Institute of Siberia and the Far East
- Reported illness
- Pneumonia of unknown cause
- Contacts monitored
- Reports ranged from dozens quarantined to almost 200 people placed under observation
- Russian authorities’ account
- Rospotrebnadzor said testing found no microorganisms associated with her work and an expert commission found no pathogen-handling accident
- Contact testing
- Reports citing Rospotrebnadzor said tests detected two Covid-19 cases and two rhinovirus infections among contacts, with no other infectious diseases found
- U.S. response
- Marco Rubio said the United States was monitoring the case and did not consider it cause for alarm
Sources
What do we know about plague institute lab worker's death in Russia?
White House Monitors Suspected Plague Case in Russia
Dozens quarantined in Siberia after plague institute lab worker dies
Plague fears grip Siberia after lab worker dies, dozens placed under quarantine - Telegraph India
