Quarantine measures in place in several hospitals in eastern Russia amid uncertainty over death of Darya Shipilova
The US secretary of state, Marco Rubio, has said the US is closely monitoring the case of a Russian laboratory worker who died last week after a reported accident at a plague research institute in Siberia.
“We’re watching and monitoring it closely,” Rubio said on Monday before leaving for a trip to Europe. He added: “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.”