http://www.ibnlive.com/news/peck-is-healthier-than-a-handshake-says-new-study/56409-17.html

The next time you greet a person, make sure you avoid shaking hands. Instead give a peck on his or her cheek – it’s healthier for you.

A team of international researchers has carried out a study and found that people who greet each other with handshakes are much more likely to pass on germs, such as flu and stomach bugs, than those who settle for a kiss.