Everybody's Sick!

[Calypso]

Help! There's a really nasty upper respiratory infection going around my office, and it seems all the staff who have it are coming in to work sick. I can understand them not wanting to waste their personal time on sick days, but I'm also afraid I'm going to catch what they've got...and I have a vacation coming up in a couple of months. Anybody have any tips for increasing my resistance and bolstering my immune system?