The common name for the influenza infection is "the flu." Influenza is a contagious viral infection that primarily affects the respiratory system, causing symptoms such as fever, cough, sore throat, body aches, and fatigue. The flu virus tends to circulate seasonally, especially during the fall and winter months. Vaccination is a key preventive measure against influenza, as different strains circulate each year. Timely vaccination and good hygiene practices, such as handwashing and covering coughs, can help reduce the incidence of flu infections.