Well, yeah, it's likely relevant that it's a virus which can jump the species barrier and then go on to be passed human to human. It's kinda what makes them so deadly. Can't remember the name of such viruses now, but I know HIV is one of them. And indeed, one way of preventing viruses jumping the species barrier is to not eat or come into contact with infected material. Like if we think about cholera, which doesn't jump the species barrier as far as I'm aware, the key to control was / is clean water, not continuing to consume dirty water. So yeah.
Sussex is well deserted. The buildings that usually house the international private provider students have been shut. They're simply not there at the moment - could be holidays for the new year though. And no, I can't provide any documentary evidence for this claim, only confirmation that normally, on every other day, these buildings are open and 'trading'. Internal comms report the cancellation of planned trips to China at least until the end of February, to be reviewed, alongside significant support for students, including advice on self-quarantine.