cholera is prevalent in Yemen.

It seems that cholera is prevalent in Yemen.
About 2,000 people seems to have died.

ＮＨＫ国際部‏ 
More than 500,000 cases of cholera infection in Yemen "The world's largest epidemic"
http://www3.nhk.or.jp/news/html/20170815/k10011099961000.html?utm_int=news-international_contents_list-items_001

By the way, a while ago, many people suffered from Ebola hemorrhagic fever.
More than 10,000 people seem to have died.

In Korea, recently mers has become prevalent.

In Japan, there were a lot of people who suffered from swine influenza a while ago.
I escaped the difficulties because I was on long term leave of absense.

In Japan, it seems that there are many people who recently suffer from hand and foot mouth disease.

I am scared of avian influenza.
Infection from birds to people has been confirmed.
If infection of bird flu from people to people begins, pandemic like Spanish flu seems to happen and it is scary.
Spain cold ; In 1918 (during World War I), dead 50 million to 100 million people