Some wards have individual rooms included within them, so it's poosible to be 'on a ward' and 'in a room' at one and the same time. For example, I was on Stowupland Ward at Ipswich Hospital for my prostate of three months ago but actually located in a room on my own.
With it saying General Ward, I thought that meant with other patients. My local hospital has 4 beds in each ward but there are sidewards off the corridor (some I believe have en-suite) and a door you can close. I expect he is in something like that.
He should be isolated, so if he's in a general ward this is a mistake as it only serves to lend credence to the conspiracy theorists who are claiming his illness is a hoax, which is the last thing we want.