Seeing washing your hands and keeping yourself neat andd clean is the foremost step... So,Always wash your hands,
after coughing,sneezing,going to the toilet,etc
after being on contact with someone who himself has a flu
before preparing food and having it
also,cover your nose and mouth before sneezing...
alsoTRY TO GET VASCINATED NOT ONLY YOURSELF BBUT ALSO YOUR NEIGHBOURING PEOPLE...
I hope it helped!!