11-17-2012 08:39 AM
They don't have to but they seem to get cured faster if they stay home (and don't give it to others).
You can call in sick through your phone.
12-27-2012 09:06 PM
As well as keeping them home, you can also send them to the hospital and get a vaccination for 250 simoleons. They should be flu-free for the year. This also can cure your sim if they are already sick.