According to a study by researchers at the University in Hong Kong, the novel coronavirus can remain infectious on face masks for up to a week, and last on banknotes, stainless steel and plastic surfaces for more than four days. However, the virus can be killed by household disinfectants, bleach or frequent hand washing with soap and water, said the researchers in the study published in medical journal The Lancet. The researchers tested how long the virus could remain infectious at room temperature on a variety of surfaces. On printing and tissue paper it lasted less than three hours, while on treated wood and cloth, it had disappeared by the second day. On stainless steel and plastic it was present for between four and seven days.