Prolonged Infectivity of SARS-CoV-2 in Fomites

We spotted severe acute respiratory syndrome coronavirus 2 on polystyrene plastic, aluminum, and glass for 96 hours with and without bovine serum albumin (3 g/L). We observed a steady infectivity (<1 log(10) drop) on plastic, a 3.5 log(10) decrease on glass, and a 6 log(10) drop on aluminum. The presence of proteins noticeably prolonged infectivity.