H3N2 is a subtype of the Influenza A virus, which causes flu. Its symptoms are similar to those of any other flu, such as cough, fever, body aches, headache, sore throat, runny or stuffy nose, and extreme fatigue. To prevent its spread, one should wash their hands, carry a pocket sanitizer, avoid contact with infected individuals, and maintain a healthy diet with plenty of fruits and vegetables. Drinking fluids and eating home-cooked, low-spice, and low-fat food can also help improve immunity. S