- The Trump administration formally asked Russia for details about the reported death of a laboratory worker at a facility studying pneumonic plague in Siberia's Irkutsk region. Russian authorities said they found no plague in the deceased worker or contacts. Overnight, the U.S. Embassy reiterated its "Do Not Travel" warning for Russia and urged Americans already in the country to leave immediately. "The U.S. Embassy is aware of press reports from the Irkutsk region of suspected pneumonic plague resulting in the death of an individual and of associated quarantine measures in, and closures of, hospitals in Irkutsk," the U.S. Embassy in Moscow wrote in an advisory overnight. The embassy continued, "We continue to track the situation closely. The U.S. government has limited ability to help U.S. citizens in Russia, especially outside of Moscow. U.S. government personnel may face additional restrictions for personal and official travel to specific regions due to health and security concerns." Russia's health watchdog, Rospotrebnadzor, said Tuesday that 60% of the lab worker's identified contacts had been tested. Officials reported no plague detected among those screened, but testing identified two Covid-19 cases and two rhinovirus infections. "No other infectious disease pathogens were detected among the contacts," Rospotrebnadzor said in a statement that did not explicitly mention plague. President Trump said Tuesday he had a call scheduled with Russian President Putin to discuss the health crisis matter. Separately, a State Department official told NBC News on Tuesday that the U.S. government spoke with Moscow health officials as early as Friday. The Centers for Disease Control and Prevention wrote on X yesterday that it was "working across the U.S. government to assess developments as additional information becomes available." Dr. Peter McCullough, a Texas cardiologist, who created a "multi-drug protocol" aimed at early treatment of Covid-19, wrote on X: