Archive · 6 Oct 2026
WHO Says Risk Low After Siberian Lab Worker’s Unconfirmed Death
A 28-year-old worker at a laboratory in Siberia died after getting severe pneumonia.
Officials are checking whether plague could have caused her illness, but they have not confirmed that she had plague.
Her illness first looked like a common respiratory infection.
Authorities found people who had been in contact with her and monitored them.
Reports say some tests found COVID-19 and rhinovirus, but no other dangerous infectious disease pathogens.
Russia says it took general health precautions, not special anti-plague measures.
The World Health Organization says the risk is low in Russia overall, though it rates the risk in Irkutsk as moderate to low.
WHO is checking the information and says it can help Russia if asked.
U.S. Secretary of State Marco Rubio has urged Russia to share more information.
Darya Shipilova, a 28-year-old laboratory worker in Irkutsk, died after developing severe pneumonia; the exact cause remains undetermined.
Russian authorities are investigating possible pneumonic plague, but no plague case has been confirmed.
WHO rates the risk moderate to low in Irkutsk, low across Russia and very low in the WHO European region.
Authorities traced and monitored contacts; reports say testing found COVID-19 and rhinovirus infections, but no pathogens linked to other dangerous infectious diseases.
Russian officials say they took general preventive health measures, while denying reports of special anti-plague measures; Marco Rubio called for greater transparency.
- Who
- Darya Shipilova, a 28-year-old laboratory worker; Russian authorities, the World Health Organization and U.S. officials are involved.
- What
- Shipilova died after severe pneumonia, and authorities are investigating whether pneumonic plague was involved; no plague case has been confirmed.
- When
- She died last week; WHO gave its assessment at a Tuesday briefing, with no calendar date specified in the articles.
- Where
- Shelekhov, near Irkutsk, in Russia’s Irkutsk region.
- Why
- The case is being examined because Shipilova worked at a facility studying plague and other dangerous pathogens, and plague occurs naturally among wild animals in the area.
Russian authorities’ account
Calls for clarification
Whether special anti-plague measures were imposed
Russian authorities’ account
Rospotrebnadzor rejected reports of special anti-plague measures, saying the actions were general public-health precautions and no plague case had been confirmed.
Calls for clarification
Reports described quarantine or special anti-plague measures. The articles also say contacts were identified and medically monitored; the disagreement concerns how those precautions should be characterized.
Transparency and verification
Russian authorities’ account
Russian authorities say they conducted preventive measures and testing, and the governor said samples showed no microorganisms linked to Shipilova’s professional work.
Calls for clarification
WHO is seeking to verify the reported event and laboratory results, and Marco Rubio argued that Russia should share more information with the international community.
- Person who died
- Darya Shipilova, 28
- Reported cause of death
- Pneumonia; its precise cause remains undetermined
- Plague status
- Pneumonic plague is being considered, but no case has been confirmed
- WHO risk assessment
- Moderate to low in Irkutsk; low in Russia; very low in the WHO European region
- Contact measures
- Authorities identified contacts, placed them under medical observation and conducted testing
- Reported test results
- Two COVID-19 cases and two rhinovirus infections were reported among test results; no pathogens linked to other dangerous infectious diseases were reported
- Russian authorities’ position
- Rospotrebnadzor denied imposing special anti-plague measures and described the actions as general preventive public-health measures
- U.S. response
- Marco Rubio urged Russia to provide more information; Donald Trump said the United States was willing to help if needed
