Fears of a pneumonic plague outbreak have gripped Russia's Irkutsk region in Siberia following the death of a laboratory worker, Darya Shipilova, who reportedly broke a test tube containing the plague pathogen. The incident has led to widespread panic among residents and prompted authorities to implement strict quarantine measures across the area.
Darya Shipilova, a 28-year-old laboratory assistant specializing in dangerous pathogens at the Irkutsk Research Anti-Plague Institute, died in the early hours of October 2 in the intensive care unit of the Shelekhov district hospital. According to local media and accounts from her colleagues, the incident occurred on September 25 when she accidentally smashed a test tube containing the dangerous bacterium Yersinia pestis while working with live biological material.
Pneumonic plague is known for its extremely rapid development and is almost invariably fatal without immediate and targeted antibiotic treatment. In response to the potential threat, approximately 200 individuals have been placed under strict medical observation. Several hospitals in Irkutsk were immediately closed and quarantined for three weeks, as reported by the outlet "Baikal People." As a preventive measure, masks were made compulsory at the Irkutsk aluminium plant in Shelekhov on Saturday. Residents of Shelekhov have also observed people wearing protective suits, masks, and gloves on the streets, with local parents reporting that masks were distributed in kindergartens.
The seriousness of the situation was underscored by the urgent arrival of Anna Popova, head of Rospotrebnadzor, at Shelekhov hospital. She participated in an emergency meeting of the sanitary and anti-epidemic commission, chaired by regional governor Igor Kobzev.
Initially, officials restricted information, with authorities in the Irkutsk region and Governor Igor Kobzev avoiding the word "plague" during the first 24 hours after Shipilova's death. On October 2, Kobzev referred to the situation as "a particularly dangerous infection" and assured that it was "under strict control." The following day, authorities in Baikalsk urged residents to avoid traveling to Shelekhov due to plague, though this post was deleted just hours later. Alexey Tsydenov, the head of Buryatia, also commented on the situation, initially linking the woman's death to a plague infection, but later amending his statement to a more cautious wording. This lack of clear communication has significantly fueled panic across social networks in Irkutsk and neighboring regions.
Amid public anxiety, well-known Russian epidemiologist Gennady Onishchenko attempted to offer reassurance, noting that plague carriers—rodents and fleas—in Siberia typically enter winter dormancy by early October. However, this did little to dispel residents' fears.
Rospotrebnadzor's press service later issued a statement, asserting that "The sanitary and epidemiological situation in Irkutsk region, in the cities of Irkutsk and Shelekhov, is stable." The agency confirmed that "A special package of measures has been organised and carried out in connection with the illness of an employee of the Irkutsk Anti-Plague Institute of Siberia and the Far East, diagnosis: 'Pneumonia of unknown aetiology'." Rospotrebnadzor further stated that no incidents involving pathogenic microorganisms had been recorded at the institute, and no staff member had sought medical help for infectious diseases in the past 10 days.
