Siberian Plague Scare Live Updates: Mystery Virus Behind Researcher’s Death? What Happened at Russia’s Anti-Plague Lab, 197 Contacts Quarantined & What We Know

A 28-year-old laboratory technician at an anti-plague research institute in Russia’s Siberian region of Irkutsk has died after developing severe pneumonia, triggering concern over a possible pneumonic plague infection.

The woman, identified in reports as Darya Shipilova, worked at the Irkutsk Anti-Plague Research Institute in Shelekhov. Nearly 200 people who may have come into contact with her have been placed under medical observation, according to reports.

However, Russian health authorities have not confirmed that plague caused her death. The official description is pneumonia of unknown aetiology, while reports of a possible laboratory accident remain unverified.

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Siberian Plague News: Who Was Darya Shipilova?

Darya Shipilova, 28, was a laboratory technician working at the Irkutsk Anti-Plague Research Institute in Shelekhov, near Irkutsk.

Reports say she developed severe pneumonia and was admitted to a hospital in Shelekhov on September 29. She died in the early hours of October 2 after her condition deteriorated.

Her death became the focus of public health concerns because of her work at a facility that researches dangerous infectious diseases.

Siberian Plague Latest News: What Happened Inside the Anti-Plague Laboratory?

Reports from Russian and international media have alleged that Shipilova accidentally broke a test tube containing Yersinia pestis, the bacterium responsible for plague, while working with biological material.

The alleged incident reportedly occurred on September 25, several days before she developed severe symptoms.

However, this account has not been independently verified. Russian health authorities have disputed reports of a laboratory accident and said no incident involving pathogenic microorganisms was recorded at the institute.

Was Darya Shipilova Infected With Pneumonic Plague?

This remains the central unanswered question.

Several reports have described the death as a suspected case of pneumonic plague. Other reports have linked her illness to possible exposure to plague bacteria inside the laboratory.

But Russia’s federal public health agency, Rospotrebnadzor, has reportedly classified her illness as pneumonia of unknown aetiology and said testing did not detect microorganisms connected to her professional activities.

Therefore, it would be premature to describe the case as a confirmed plague death.

What Is Pneumonic Plague and How Does It Spread?

Pneumonic plague is a severe form of plague caused by the bacterium Yersinia pestis.

Unlike bubonic plague, which typically affects the lymph nodes, pneumonic plague infects the lungs. It can spread from person to person through respiratory droplets, particularly when an infected person coughs or sneezes.