Archive · 7 Oct 2026
Russian Lab Worker’s Death Raises Plague Concerns and Questions
Darya Shipilova worked at a Russian laboratory that studies dangerous diseases.
She became very sick with pneumonia and died on October 2.
Officials have not established what caused her illness.
Some news reports suggested she may have caught plague after a laboratory accident, but that has not been proven.
Russian health officials said tests found no germs connected to her work and no lab accident involving dangerous germs.
Authorities watched people who had been in contact with her and took precautions.
Reports gave different details about some contact test results.
US officials said they were keeping an eye on the case, but did not think there was cause for alarm.
For now, whether this was plague or how she became ill remains unknown.
Darya Shipilova, 28, died on October 2 after developing severe pneumonia; Russian authorities described it as pneumonia of unknown aetiology.
Reports of a broken test tube and possible pneumonic plague remain unconfirmed; officials said testing found no pathogens linked to her work or lab accident.
Authorities monitored contacts and imposed precautionary measures; reports differ on contact test results, including AP’s report of two common-cold virus and two COVID-19 positives.
Some accounts linked Shipilova’s illness to a work trip to Buryatia, while other reports described a possible laboratory exposure; neither explanation has been confirmed.
US officials said they were monitoring the situation, while Russian authorities described it as stable and urged reliance on official health statements.
- Who
- Darya Shipilova, a 28-year-old worker at the Irkutsk Anti-Plague Research Institute.
- What
- She died after severe pneumonia; plague has not been confirmed as the cause.
- When
- She died on October 2; reports said she was hospitalized on September 29.
- Where
- A hospital in Shelekhov, in Russia’s Irkutsk region.
- Why
- The cause of her pneumonia and how she became ill remain unclear.
Official statements
Reported concerns
Cause of illness
Official statements
Russian health authorities described the illness as pneumonia of unknown aetiology and said testing found no microorganisms associated with her professional work.
Reported concerns
Some local and independent media reports raised the possibility of pneumonic plague, but no article confirms that diagnosis.
Possible laboratory accident
Official statements
Rospotrebnadzor said investigators found no incident involving pathogenic microorganisms at the institute.
Reported concerns
Some reports said Shipilova may have broken a test tube containing plague bacteria; that account remains unconfirmed.
Public communication and risk
Official statements
Russian authorities described the situation as stable and under control, and Kremlin spokesman Dmitry Peskov urged reliance on official health statements.
Reported concerns
Deleted or edited posts and conflicting reports prompted accusations of a cover-up and calls for a clearer account.
Contacts’ test results
Official statements
Regional officials said identified contacts had no symptoms and that laboratory tests were negative.
Reported concerns
AP reported that two contacts tested positive for a common-cold virus and two for COVID-19.
- Age
- 28
- Date of death
- October 2
- Official illness description
- Pneumonia of unknown aetiology
- Workplace
- Irkutsk Anti-Plague Research Institute of Siberia and the Far East
- Reported laboratory incident
- Some Russian media reported a broken test tube containing plague bacteria; the account is unconfirmed.
- Authorities’ findings
- Rospotrebnadzor said tests found no microorganisms linked to her professional activities and no laboratory incident involving pathogenic microorganisms.
- Contact test reports
- AP reported two contacts tested positive for a common-cold virus and two for COVID-19; regional officials said identified contacts showed no symptoms and tests were negative.
- US position
- Secretary of State Marco Rubio said the US was monitoring the case but did not believe there was cause for alarm.
