The full meaning of "flu" is influenza. It is a contagious respiratory illness caused by influenza viruses. The flu is a common illness, and most people recover without needing specific treatment. It is characterized by symptoms like fever, cough, sore throat, and body aches. Link
The thing about flu is that it never ends. As scientist find a cure for this flu, another one springs up. The list of flu we have is a long list. The thing is that the new flu gets the popularity and scare people until a cure is found. The most casualties of the new flu are the ones that contacts it first.
There will always be a new flu because people keep trying out new methods and new things which can eventually go out of hand.
You can also participate by clicking here
