Russia keeps quarantine in place after plague scare in Irkutsk region
Russian authorities have kept quarantine restrictions in place across parts of the Irkutsk region after saying a laboratory assistant who died last week did not have plague. The case is centred on the anti-plague institute in Irkutsk and on nearby hospitals, where containment measures remain in force while testing continues. Officials say the public health situation is stable, but the investigation has not yet fully ended.
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Rospotrebnadzor, Russia's national health watchdog, said tests of biological material from Daria Shipilova found no microorganisms linked to her professional activity and no accidents involving pathogenic micro-organisms had been detected at the institute. Irkutsk governor Igor Kobzev said a special expert commission had concluded the cause of death was pneumonia of unknown aetiology. He said the situation remained under the control of experts, while Kremlin spokesman Dmitry Peskov urged journalists to rely on official statements rather than speculation.
More than 60 institute employees were isolated inside the building from Friday, according to the supplied report, with food parcels passed through a checkpoint. Several hospitals in Irkutsk were also placed under quarantine, including three city clinical hospitals, the Ivano-Matreninsky children's hospital and the city maternity hospital. The Central District Hospital in Shelekhov, where Shipilova lived, was also closed, and a mask mandate was introduced at the Irkutsk Aluminium Plant in Shelekhov.
The case has drawn attention because it involves a suspected exposure at a specialist anti-plague institute, where laboratory safety and rapid tracing are central to preventing wider spread. Pneumonic plague is a serious infection, and even a suspected case can trigger strict containment measures, travel warnings and the isolation of contacts. The response in Irkutsk shows how quickly regional authorities can move to limit movement when the source of infection is uncertain.
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The supplied material also shows that the public message has shifted as more test results have come in. The head of neighbouring Buryatia, Alexei Tsydenov, initially said Shipilova had died of plague before adding the word "possibly," and regional authorities briefly posted and then deleted a warning telling residents not to travel to Shelekhov because of plague. Among those who had contact with Shipilova, officials said two cases of COVID-19 and two rhinovirus infections were found, with no other infectious agents identified.
What remains unclear is whether any further cases will emerge among the people under isolation, and whether the quarantine measures will be lifted or extended. It is also not yet clear how Shipilova was exposed, or whether the incident will remain classified as an unexplained pneumonia rather than a confirmed plague case. The next developments to watch are additional laboratory results, any further official briefing, and whether restrictions at hospitals and the institute are eased.
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