I have seen threads about this before, but can't find any. I know lots of people think it's not necessary to wipe/wash shopping, but on the BBC website today it says:
There is a small potential risk of contamination if the food or packaging has been handled by someone who has tested positive.Online shopping customers are generally advised toleave packaged goods for 72 hours if possible before handling them, or to spray and wipe plastic or glass containers with diluted bleach.Unwrapped fresh goods should be washed under running water and left to dry.