US State Secretary Marco Rubio said Monday the United States is closely monitoring the death of a Russian laboratory worker at a plague research institute in Siberia, though he characterized the situation as not immediately alarming.
Rubio made the statement before departing for a European trip. "We're watching and monitoring it closely," he told reporters. "I don't think it's cause for alarm, but it is cause for focus and a cause just to keep an eye on it."
The Russian laboratory worker, identified by The Guardian as Darya Shipilova, died last week following a reported accident at the plague research facility. Her death occurred amid quarantine measures implemented at several hospitals in eastern Russia, according to The Guardian. The exact cause of death remains uncertain, with reports describing it as a "possible" plague fatality.
The incident has drawn international attention given the sensitive nature of plague research and the geopolitical tensions between the United States and Russia. Rubio's measured public response reflects the diplomatic balance the State Department is striking between acknowledging the situation and avoiding escalation based on unconfirmed details.
The Guardian reports quarantine protocols activated at multiple eastern Russian hospitals suggest health authorities there are treating the case with precaution, though specifics about the scope or duration of those measures remain unclear from the available reporting.