Many hospitals and other places have started using brass handle bars or whatever they’re called on doors. Very long and techincal article, could not find exact number of days for new corona virus.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4659470/
Respiratory viruses are responsible for more deaths globally than any other infectious agent. Animal coronaviruses that “host jump” to humans result in severe infections with high mortality, such as severe acute respiratory syndrome (SARS) and, more recently, Middle East respiratory syndrome (MERS). We show here that a closely related human coronavirus, 229E, which causes upper respiratory tract infection in healthy individuals and serious disease in patients with comorbidities, remained infectious on surface materials common to public and domestic areas for several days. The low infectious dose means that this is a significant infection risk to anyone touching a contaminated surface. However, rapid inactivation, irreversible destruction of viral RNA, and massive structural damage were observed in coronavirus exposed to copper and copper alloy surfaces. Incorporation of copper alloy surfaces in conjunction with effective cleaning regimens and good clinical practice could help to control transmission of respiratory coronaviruses, including MERS and SARS.
No data on the new virus, yet.
Several studies on other viruses in this particular virus family.
I read this study and asked hubby about copper countertops. LOL. He blanched and stammered a minute, then said unaffordable for the time being LOL.
makes me wonder if spraying with the copper spray I used for my tomatoes might work too.