A hospital's oxygen supply has "reached a critical situation" due to rising numbers of COVID-19 infections.
A document shared with the BBC showed Southend Hospital has had to reduce the amount it uses to treat patients. It said the target range for oxygen levels that should be in patients' blood had been cut from 92% to a baseline of 88-92%.
Hospital managing director, Yvonne Blucher, said it was "working to manage" the situation.
"We are experiencing high demand for oxygen because of rising numbers of inpatients with Covid-19 and we are working to manage this," she said.
Source: BBC News, 11 January 2021