I got real sick last year and my friend told me I should get tested. I told her I don't need a test to tell if I'm sick. Also I didn't feel good enough to go out in public and spread germs I know I have.
On a positive note, people can call in sick now, I was forced to work sick several times, as a waitress. They finally let me go one time due to customers calling the company and complaining I was throwing up and still working. A couple times I barfed then dry heaved right in the dinning room. The health department showed up after that and the company got fined. They talked to me and I told them the truth.