Key Takeaway:
- Russian authorities deny a plague outbreak in Siberia after an anti-plague lab worker died.
- Rospotrebnadzor says tests found pneumonia of unknown cause, with no evidence linking it to plague.
- About 200 people are under medical observation as conflicting reports fuel public concern.
Russian health authorities deny a plague outbreak in Siberia after an anti-plague institute worker died Oct. 2, saying tests found pneumonia of unknown cause.
Death Triggers Plague Fears In Irkutsk
Darya Shipilova, a 28-year-old laboratory assistant at the Irkutsk Research Anti-Plague Institute, died in intensive care at a hospital in Shelekhov, local reports said. Her death triggered fears that pneumonic plague had spread in the region.
According to reports from local media, Shipilova became ill after allegedly breaking a test tube containing Yersinia pestis, the bacterium that causes plague, while handling biological material Sept. 25. Her condition reportedly worsened rapidly two days later.
Authorities placed about 200 people under medical observation following the incident. Local reports also described quarantines at hospitals, protective equipment among residents and preventive mask requirements at an aluminum plant in Shelekhov.
However, the reported laboratory exposure and subsequent plague infection have not been confirmed by Russia’s federal health authorities.
Officials Reject Claims Of Plague Infection
Rospotrebnadzor, Russia’s consumer health and epidemiology watchdog, said Sunday that the sanitary and epidemiological situation in Irkutsk and Shelekhov was stable.
The agency said Shipilova was diagnosed with “pneumonia of unknown aetiology” and that additional testing of samples taken from her did not identify microorganisms connected with her professional activities.
“The sanitary and epidemiological situation in Irkutsk region, in the cities of Irkutsk and Shelekhov, is stable,” Rospotrebnadzor’s press service said in a statement.
The agency also said no incidents involving pathogenic microorganisms had been recorded at the anti-plague institute and that no employees had sought medical care for infectious diseases during the previous 10 days.
Regional officials have also sought to contain public concern. Irkutsk Gov. Igor Kobzev said the situation was under strict control, while Rospotrebnadzor head Anna Popova traveled to Shelekhov and attended an emergency sanitary and anti-epidemic meeting.
Conflicting Reports Fuel Public Anxiety
Conflicting official statements and social media reports have contributed to fears in Irkutsk and surrounding areas. Local authorities initially avoided publicly identifying plague as a possible cause, while a later warning advising residents not to travel to Shelekhov reportedly was deleted within hours.
Alexey Tsydenov, head of neighboring Buryatia, initially said the woman’s death was linked to plague, citing federal and regional authorities. His statement was later amended to use more cautious language.
Epidemiologist Gennady Onishchenko sought to reassure residents, saying plague carriers such as rodents and fleas generally become inactive in Siberia as winter approaches.
Pneumonic plague can progress rapidly and can be fatal without prompt antibiotic treatment. However, the available information does not establish that Shipilova had plague or that a plague outbreak is occurring in the region.
Rospotrebnadzor said authorities have implemented a special package of sanitary measures in response to the illness and continue monitoring the situation.




