It's a flu epidemic that now stretches across the country, affecting every state.
And now is the worst we've seen in more than a decade. Tonight at least 18 children have died, some perfectly healthy. What over-the-counter medications work and which are a waste of money?
And why do some say heading to a hospital is the worst thing you could do?
Senior Health Correspondent Monica Robins was inside the emergency room at University Hospital.
Local emergency rooms are busy but not busting at the seams but you can expect to wait to be seen at urgent care centers.
Expect to be asked to wear a mask if you're experiencing symptoms and some hospitals are now using visitor restrictions to help contain the spread.
- You can be contagious for up to a day before you get symptoms
- You can be contagious for up to 7 days after you get symptoms
- Germs can typically live on surfaces for two to eight hours, but there have been reports of up to 48 hours
- The virus can spread to someone up to 6 feet away, if they cough or sneeze, as flu germs can stay suspended in the air
The solution? Drink lots of fluids and get lots of rest or try some over-the-counter remedies