A recent government study found out that Novel Coronavirus (Covid-19) can survive in the air from 30 minutes to 3 hours, on cardboard for up to 24 hours, on stainless steel for up to 2 days, and on plastic for up to 3 days.
The virus remains communicable and detectable for most surfaces when in contact. There is a 35% attack rate from someone who has the virus.
This also includes bags, credit cards, trolleys, elevator buttons, escalators to name a few items you should stay cautious from.