Plague had not been detected among close contacts of a worker in an anti-plague laboratory in Siberia who died last week, with 60% of the identified group tested so far, officials in Russia say. ↧ Russia says no plague found in contacts of Siberian lab worker who ... News that a female staffer at the Irkutsk Anti-Plague Institute of Siberia and the Far East had died from a “pneumonia of undetermined” origin last week has spread fears worldwide.