The symptoms are almost indistinguishable from seasonal flu, except that it sickens mostly teens and young adults instead of just children and the elderly. Expect the typical fun stuff: fever, body aches, runny nose, fatigue, sore throat. Novel H1N1 can also cause diarrhea and vomiting. If you're sick, the CDC recommends quarantining yourself for a week: no work, no school, not even a trip to the grocery store. If you have to leave the house, wear a mask. Stock up on over-the-counter flu medicine, minimize contact with family, guzzle fluids, and wash your hands for at least 15 seconds after coughing or sneezing.