An infectious virus of the nose, throat, and lungs
Influenza viruses A, B, and C cause the flu which is spread mainly from droplets made when people with the flu cough, sneeze, or talk. These droplets usually land on the mouth, nose, or can be inhaled into lungs.
Most people with the flu recover in a week or so. But some serious cases, if so cal your doctor or nurse immediately
Try not to be in close contact with people with the flu.
1. Flu epidemics happen every 2-3 centuries.
2.Infect up to 20% of Americans per year
3.Billions of dollar invested on the flu each year
4.Pigs can catch the flu
Flu Attack! How A Virus Invades Your Body