Interesting

Of the 46 people swab-tested on the Grand Princess so far, 21 tested positive for the virus and one was deemed inconclusive, Pence said. The rest tested negative for the disease. Nineteen of those who tested positive were crew members.

It seems it’s highly contagious in close quarters with 19 of 21 that was test positive had it were crew members. Probably shared quarters.

That would also explain Lifecare conditions.