Here is a concise original summary based on the information published by the source. What is the pneumonic plague? NPRExclusive | U.S. Escalates Pressure on Russia Over Siberia Lab Death WSJNearly 200 People Under Observation After Irkutsk Lab Worker Dies From Plague The Moscow TimesFacing Russian stonewalling, Trump admin ramps up pressure for info as it struggles to plan for potential plague fallout CNNDOH monitoring Russia outbreak Philstar.com For the full context and any later updates, use the original source link.