Russia quarantines hospitals after plague researcher's death in Irkutsk region
Darya Shipilova, a researcher at the Irkutsk Anti-Plague Research Institute, died last week of pneumonia whose cause officials initially called unknown. Russian authorities have placed roughly 200 people under medical observation, isolated dozens more, and quarantined several hospitals amid unconfirmed reports she had been exposed to Yersinia pestis, the plague bacterium, after breaking a test tube on September 25.