I wish they would make their minds up.
This is pure idiocy.
It's a new virus and research is ongoing and advice will change.
Realise the information we are getting is highly uncertain to be accurate and the best thing you can do to protect yourself is be ultra ultra cautious.
You only have to look at Boris Johnson bragging he was shaking hands with CV19 patients and if you wash your hands it's fine to a couple of weeks later telling everyone to stay 2m apart to then stay int house.
I'd say the same about incubation periods and infection risk. SARS guidance recommends you stay away from people for 14 days after your symptoms have ended. Personally with this, if you think you've got it and you are thinking of having contact with members of your family, I'd do that rather than 7 or 14 days from your first contact.
It's pretty obvious from looking at Italy that this is more transferable than just dirty door handles or kissing. The number of cases and rate of spread would give a bit of a clue that there is something more infectious/contagious here than a common cold or flu.