In our daily life people often meet and greet with different styles and traditions, but mostly we do it by shaking our hands and it is quite normal around the globe.
But if a person who is infected by a flu virus can unintentionally transfer flu virus to somebody else who is not aware of it. And we cannot tell each and every one that we have got a flue virus. And normally people get offended before they get to know the reason of it. So in how many ways we can avoid such situations?
I searched for the same question but that was different from its point of view and was not more general.
This question isn't like the other two proposed questions because the other question are about never shaking hands when mine is about not shaking only in case of flu.
The following link to the source of studies explains the reasons of not shaking hand with a flu infected person: Influenza Transmission Research