No SARS for me, please...

My next-cubicle neighbor has been coughing this morning and I heard him talking on the phone with his doctor:

Jon: "Yes, I got this cough a couple weeks ago while on vacation and it hasn't gone away."

Doctor (I'm guessing): "Probably SARS."

Jon: "OK. Well I'll continue to work and contaminate my neighbor John. Let me know if there's anything I can do to assure him of certain death."

Doctor: "Will do."

How concerned should I be? Hmmm...