US closely monitoring case of lab worker who possibly died of plague in Siberia

A lab worker in Siberia is suspected to have died of the plague, prompting the US to closely monitor the situation. The incident occurred in Irkutsk, a city in eastern Russia. The lab worker's identity and the exact nature of their work remain unclear. Russian authorities have begun taking quarantine measures to prevent the spread of the disease, which includes restricting travel and increasing surveillance in the area.