U.S. tracking Siberian lab death amid pneumonic plague risk

Secretary of State Marco Rubio said Oct. 5 the U.S. is closely tracking the death of Daria Shipilova, 28, a technician at Siberia's Irkutsk Anti-Plague Institute, amid concern pneumonic plague — the lung form that can spread person-to-person — may have spread. No alarm, he said, but focus and monitoring. Next steps hinge on undisclosed lab evidence.