What is the relative risk to contract SARS-CoV-2 infection
through surfaces?
SARS-CoV-2 remained viable in aerosols for 3 h with a
~10-fold reduction in infectious
titre.253 SARS-CoV-2 was more stable on plastic and
stainless steel than on copper and cardboard; viable virus was detected
up to 3 days after application to plastic and 2 days to stainless steel,
on each surface the virus titer was reduced nearly
~100-fold.253 Therefore, it is
convenient to minimize contact with surfaces touched by others (even
before SARS-CoV-2 existed), for example when using public
transportation.