UN Secretary General Ban Ki Moon Does No Long Shake Hands

Ban Ki Moon is South Korean and is currently the Secretary General of the UN.
Wikipedia introduces Ban Ki Moon as the following.

Ban Ki-moon :  Diplomat.
Ban Ki-moon is the eighth and current Secretary-General of the United Nations,
after succeeding Kofi Annan in 2007. Before becoming Secretary-General,
Ban was a career diplomat in South Korea's Ministry of Foreign Affairs and in the United Nations.

He is on the highest position in the UN,
an international cooperation organization for world peace.
As the secretary general and South Korean citizen,
Ban Ki Moon has recently left a message to the
international society suffering from Ebola.
After he came back from travelling Ebola-infected countries,
he greets others by touching elbows instead of shaking hands.

Secretary General Ban Ki Moon actually enjoyed shaking hands.
However, after he returned from Ebola-infected countries,
he now greets others with elbows or by waving hands
to  tell others that “there are no problems.”

South Korean Ban Ki Moon
is on the highest position of the world peace.