To protect ourself from flu you need to:
1]First of all take a vaccine that prevents flu.
2]If you are not able to then you need to take some precautionary measures such as [i]be away from sick people especially those who have caught up with cold and caugh.
[ii]Always cover the sensitive parts like your nose and mouth when you go out.
[iii]Alwys wsh your hands with fresh cold water as many times as possible.
[iv]Avoid road side food because it ill be contaminated is also a cause of several other deadly diseaseas.
If you follow these simple steps then you can protect yourself from flu.