While sick, limit contact with others as much as possible to keep from infecting them.
If you are sick with flu-like illness, CDC recommends that you stay home for at least 24 hours after your fever is gone except to get medical care or for other necessities. (Your fever should be gone for 24 hours without the use of a fever-reducing medicine.)
Cover your nose and mouth with a tissue when you cough or sneeze. Throw the tissue in the trash after you use it.