Flu Symptoms 2024 Adults. Typically, the virus resolves on its own, but in extreme cases, or especially for the very vulnerable, including infants. Symptoms often include fever, head and body aches, coughing and a stuffy or runny nose.

Influenza, commonly called the flu, is a contagious viral infection. It was often called swine flu and was a new combination of influenza viruses that infect pigs, birds and humans.