My question wasn't intended as a sarcastic one. I'm legitimately interested in peoples ideas for what employers can do. It's a hard problem for them. As alfa noted, some employees can easily perform their job from home, so yeah there is no point in bringing those people back. With others, not so much. I have no idea about your personal job situation.
As an employer, I think all you can do is bring them back unless the job can be performed from home, try to keep them isolated from other employees to the extent the job permits it, make safety gear, equipment, etc..., available where appropriate, and tell them under no circumstances are they to come in if sick, or if exposed to someone who is.
I guess all I am saying is that I struggled to see the contradictory nature of your employers emails to the employees (granted I haven't seen the emails themselves).