Influenza, referred to as the flu, is a contagious respiratory illness caused by the influenza virus.
This virus can have serious, and even lethal, effects on individuals who contract it. Flu symptoms can range from mild to severe, depending on the individual who catches it, as well as on the particular strain of the virus a person contracts.
Flu can lead to pneumonia, bronchitis and ear infections, among other serious conditions. Certain high-risk groups are more susceptible to the dangers of the flu virus, including newborns, pregnant mothers, the elderly, young children, and people with certain health conditions.
The flu vaccine is proven to protect the vaccinated individual and his/her family against the flu.