I can't answer your other questions, but I would strongly recommend that you stay home from work as much as you can, and if you are able to telework, do that for as long as you can. You need to rest to help get rid of it and going to work, even if you have a desk job, is going to prolong your illness. I'm month 4 of my bout with pneumonia and every time I go to work I have a recurrence of my symptoms, so I'm doing the sick leave/telework combo these days and feel very fortunate that I can, but have still burned through 100 hours of sick leave (again, I'm fortunate to have sick leave built up). Good luck!