Russia Investigates Researcher’s Death After Suspected Plague Exposure

Russian authorities are investigating the death of a 28-year-old researcher who reportedly became ill after a suspected laboratory exposure to Yersinia pestis, the bacterium that causes plague. Reports say she was hospitalised with severe pneumonia after returning from a research expedition near the Mongolian border. She later died while receiving treatment. Authorities quarantined a hospital and placed close contacts under observation. However, officials said the identified contacts tested negative and showed no symptoms. Russia’s public health agency described the illness as pneumonia of unknown cause and said the regional situation remained stable.

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