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Mass quarantine issued in Russia after unexplained death of plague researcher

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Based on a feed excerpt; full article content has not been acquired. Source evidence retrieved 05/10/2026, 17:28:23 UTC.

Briefings

Following the unexplained death of infectious disease researcher Darya Shipilova at the Irkutsk Anti-Plague Research Institute of Siberia, approximately 200 people are under medical observation, several hospitals are under quarantine, and dozens are in isolation. The researcher reportedly died of pneumonia of unknown cause, with some reports suggesting she accidentally broke a test tube containing the plague pathogen, Yersinia pestis, on September 25. She was admitted to a hospital on September 29 with severe pneumonia and died between October 1 and October 2. The head of the Russian region that neighbors Irkutsk initially reported she died of plague but later altered his statement to say she possibly died of the disease. The situation remains under investigation with unconfirmed information regarding her death.

Key points

• Approximately 200 people are under medical observation following the death of researcher Darya Shipilova at the Irkutsk Anti-Plague Research Institute of Siberia.
• The researcher reportedly died of pneumonia of unknown cause, with some reports suggesting she accidentally broke a test tube containing the plague pathogen, Yersinia pestis, on September 25.

Context and limitations

Early reports from Sunday and Monday may be incomplete; some details regarding the cause of death and specific hospital placements remain unconfirmed.

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