President Donald Trump announced Tuesday that he has a call scheduled with Russian President Vladimir Putin to discuss a suspected case of pneumonic plague in Siberia.

Speaking to reporters at the White House, Trump said the conversation would take place "very soon." He added that U.S. intelligence agencies are in "very deep discussions" on the matter and that more information would likely be available "probably tomorrow."

The remarks followed reports of the death of 28-year-old Darya Shipilova, a staffer at the Irkutsk Anti-Plague Institute of Siberia and the Far East. Russian authorities attributed her death to pneumonia of undetermined origin and stated that plague was not confirmed among her contacts.

Trump previously expressed willingness to assist Russia, describing the disease as "a rough disease" and noting that microbes have become stronger over time. The United States has been in contact with Russian officials since at least Friday regarding the incident.

Secretary of State Marco Rubio urged greater transparency from Moscow, stating that the U.S. is operating with limited information and warning that it could be irresponsible to speculate. The U.S. has pressed Russia on its international health reporting obligations.

The World Health Organization assessed the risk outside Russia as very low. The Centers for Disease Control and Prevention said it is monitoring the situation closely but sees no broader threat to the United States at this time.

Russian officials have denied imposing special anti-plague measures and reported that tests found only cases of COVID-19 and rhinovirus among contacts. Nearly 200 people were placed under medical observation as a precaution.

The planned discussion occurs amid ongoing U.S.-Russia tensions, including an October 18 deadline for potential sanctions decisions.