What i understood from reading this article was how viruses and bacteria can turn into world wide plagues and pandemics. How it could start in on urban city and turn out to catch on over the seas in another continent because of traveling. Each of which caused death and sorrow to countries and leaders. People need to take careful precautions even for a small flu or fever so that it will not spread. We are lucky to have the right medicine and vaccines now a' days. And these are only 5 of many other pandemics in history.

- J.D.