China is disinfecting and isolating used banknotes as part of efforts to stop the spread of the new coronavirus that has killed more than 1,500 people, officials said Saturday.

Banks use ultraviolet light or high temperatures to disinfect yuan bills, then seal and store the cash for seven to 14 days — depending on the severity of the outbreak in a particular region — before recirculating them, China’s central bank said at a press conference.

The virus, which has infected more than 66,000 people in China and spread to more than two dozen other countries, has sparked a rush to disinfect public places and minimize contact between people.

Pharmacies across the country sold out of disinfectants and surgical masks in just days after a lockdown was announced in late January on Wuhan city, where the COVID-19 illness is believed to have emerged.

Office buildings have installed packets of tissue in elevators that tenants are encouraged to use when pressing buttons, while ride-hailing company Didi exhorts drivers to disinfect their cars daily.