Influenza is a common upper respiratory disease. It is not what is commonly referred to as "stomach flu," which causes vomiting and diarrhea. Symptoms including fever, chills, coughing, headache, fatigue, sore throat and muscle aches. The symptoms are much more severe than with a common cold.
Call the doctor if you or your child has a persistent high fever, fever with a rash, trouble breathing or rapid breathing, bluish skin color, not drinking enough fluids, seem very sleepy or lethargic, seem confused, and have flu symptoms that get better but then get worse.
Stay home from school or work when you are ill. Students can return to school 24 hours after their fever is gone without fever-reducing medication and are feeling well enough to participate in school. Flu symptoms may last 5 to 7 days.