Human: What do I need to know about the flu this year? Assistant: 
The flu season typically begins in October and can last through May. This year, it is expected to be more severe than usual due to a higher-than-normal number of viruses circulating. It is important to get vaccinated each year as protection from the flu is not permanent and can wear off over time. Symptoms of the flu include fever, body aches, sore throat, congestion, runny nose, fatigue, vomiting and diarrhea. If you or someone around you has these symptoms, it is best to stay home and rest until at least 24 hours after feeling better.