Archive · 5 Oct 2026
Lab Worker's Death Prompts Plague Precautions in Siberian Russia
A 28-year-old laboratory worker in Siberia became very sick with pneumonia and died.
She had recently been on a work trip in Buryatia.
Because she worked at an anti-plague institute, officials took steps in case she had been exposed to a dangerous infection.
About 200 people who had contact with her were checked and kept under medical observation.
Officials said those people had no signs of illness and their tests were negative.
Russia has not confirmed that she had plague, and the cause of her pneumonia remains unknown.
Some reports said a broken tube of bacteria may have been involved, but an epidemiologist questioned that explanation.
Authorities cancelled public events and are investigating possible safety problems.
Darya Shipilova, a 28-year-old worker at the Irkutsk Anti-Plague Institute, died after developing severe pneumonia.
She became ill after a field expedition in Buryatia, was hospitalized on September 29, 2026, and died two days later.
Authorities placed about 200 contacts under medical observation; officials said they had no symptoms and their test results were negative.
Russian authorities have not confirmed plague, and Rospotrebnadzor described the cause as pneumonia of unknown aetiology.
Public events in Irkutsk were cancelled, hospitals were placed under security measures, and a criminal investigation into possible safety violations began.
- Who
- Darya Shipilova, a 28-year-old laboratory worker, and about 200 people identified as contacts.
- What
- Shipilova died after developing severe pneumonia; authorities introduced precautionary measures amid unconfirmed concerns about pneumonic plague.
- When
- She was hospitalized on September 29, 2026, and died two days later.
- Where
- The incident involved the Irkutsk region of Siberia, Russia; Shipilova had recently been on a field expedition in Buryatia.
- Why
- Authorities took precautions because the cause of her pneumonia was unknown and her work was at an anti-plague institute.
Reported cause
Response and official status
Possible broken test tube
Reported cause
Some reports claimed Shipilova contracted an infection after breaking a laboratory test tube containing live bacteria.
Response and official status
Epidemiologist Mikhail Favorov questioned that account, saying anti-plague institute workers wear protective suits. Authorities have not confirmed plague or the cause of her death.
- Deceased
- Darya Shipilova, age 28
- Workplace
- Irkutsk Anti-Plague Institute
- Hospitalized
- September 29, 2026
- Deaths
- Shipilova died two days after hospitalization
- Contacts monitored
- About 200 people
- Official assessment
- Rospotrebnadzor said she died of pneumonia of unknown aetiology; plague has not been confirmed
- Investigation
- A criminal investigation was launched into potential health and safety violations