On March 17th the New England Journal of Medicine published a study on the aerosol and surface stability of Covid-19 compared to SARS. Like the NIH study mentioned below, they too found that the virus could survive on steel and plastic surfaces for up to three days, and provided estimates on the half life of virus populations as well.
A (NIH) study published March 9th, 2020 finds that the (novel coronavirus) can survive on hard surfaces such as plastics and stainless steel for up to 72 hours..."
"It is not certain how long the virus that causes COVID-19 survives on surfaces, but it seems to behave like other coronaviruses. Studies suggest that coronaviruses (including preliminary information on the COVID-19 virus) may persist on surfaces for a few hours or up to several days."
A study by the Journal of Hospital infection reviewed literature on persistence of other coronaviruses found in humans on different surfaces, with the expectation that COVID-19 would behave similarly. At 68 degrees Fahrenheit, SARS survives for two days on steel, four days on wood and glass, and five days on plastic and ceramics. One strain of SARS lasted up to nine days on a plastic surface at room temperature.
"A completely flat profile, a cleaning alarm, and a silicone-coated surface were the
most important features in achieving low bacterial counts on high-contact keyboards."
"On the basis of the test results the Medigenic Infection Control keyboard-mouse system can be used without risk in hygienic sensitive areas of hospitals if disinfection is carried out correctly with preparations and application times in accordance wit the VAH list."