@robertshermantv: (OCTOBER 8): The United States has sent a formal diplomatic complaint to the Russian government demanding more information about the death of a woman who worked at an antiplague research facility in Siberia, according to a source familiar who spoke to NewsNation, The Hill's sister network. The complaint also follows reports of quarantine procedures tied to the case. Russian authorities have only attributed the 28-year-old's death to pneumonia of unknown etiology and have not confirmed plague as the cause. The case has drawn U.S. attention since it was first reported, with State Dept and CDC monitoring.