I have tested positive yesterday (perhaps it comes to us all). I am lucky, my job is portable and I can WFH when I need to.
So, work are (generally) great, usual messages of look after yourself, if you are up to it, do what you can. Basically do what is right for you.
Clients however, a different mindset, I have said on automatic email responses that I am working when I am able. Apparently this means a call to my PA to badger her to badger me that they are the most important when I am available.