The same thing was asked on another thread......
It is extremely unlikely to virus to be active as parcels take weeks to arrive.
Anyway this is what I wrote and it is based on previous evidence......
"The correct answer is that the survival of a virus on hard surfaces is dependent on several factors. The two main environment factors are the air temperature and the relative humidity. This is fairly obvious.
As the temperature goes up survival becomes less and as the relative humidity goes up, the survival rate of the virus goes up too.
It has been observed at 4°C, infectious SARS-CoV virus persisted for as long as 28 days.
But don't get scared - this is not the usual and they become inactive after 24 to 48 hrs depending on the type of surface too. Studies show that on currency notes it can survive for two days..
The best surface for killing viruses is our skin. In the cases of both common flu and cold-causing viruses, infectious particles on our hands are usually gone after 20 minutes."