For a week, Coronavirus may stay on Banknotes and Touchscreens.

The new coronavirus may remain infectious for weeks on banknotes, glass and other common surfaces, according to research by Australia’s top biosecurity laboratory that highlights risks from paper currency, touchscreen devices and grab handles and rails.

Scientists at the Australian Centre for Disease Preparedness showed SARS-CoV-2 is “extremely robust,” surviving for 28 days on smooth surfaces such as glass found on mobile phone screens and plastic banknotes at room temperature, or 20 degrees Celsius (68 degrees Fahrenheit). That compares with 17 days survival for the flu virus.

Virus survival declined to less than a day at 40 degrees Celsius on some surfaces, according to the study, published in Virology Journal. The findings add to evidence that the Covid-19-causing coronavirus survives for longer in cooler weather, making it potentially harder to control in winter than summer. The research also helps to more accurately predict and mitigate the pandemic’s spread, the scientists said.

“Our results show that SARS-CoV-2 can remain infectious on surfaces for long periods of time, reinforcing the need for good practices such as regular hand washing and cleaning surfaces,” said co-author Debbie Eagles, the center’s deputy director, in an emailed statement Monday.