Influenza vaccine

Influenza is a viral infection that attacks your respiratory system — your nose, throat and lungs...

Influenza is a contagious respiratory illness caused by influenza viruses. It can cause mild to s...

Seasonal influenza is characterized by a sudden onset of fever, cough (usually dry), headache, mu...

Influenza, commonly known as "the flu", is an infectious disease caused by influenza viruses. Sym...

influenza, also called flu or grippe, an acute viral infection of the upper or lower respiratory ...