Which disease had the worst epidemic or pandemic of all time?

Question

Can be anything..... AIDS, Black Death, Influenza, TB, etc.

Answer 1

Either the Spanish flu (influenza pandemic) of the early 20th century, AIDS, or the Black Death, depending upon your source.

http://www.newscientist.com/channel/health/hiv/dn9948
http://www.associatedcontent.com/article/109007/the_spanish_flu_of_19181919_the_worst.html
http://www.amazon.co.uk/Spanish-Flu-Pandemic-1918-Perspectives/dp/041523445X
http://medievalhistory.suite101.com/article.cfm/the_black_death_13471351

Answer 2

The Black Death

Answer 3

The Black Death in Europe in the 14th century killed a very large portion of the world, and over one-third of Europe. The total estimated deaths are 75 million people. The disease is thought to have originally came from travellers from the middle east, and was spread rapidly because of poor sanitation in the middle ages. It is also known as the Bubonic Plague, and was transmitted mainly by coming in contact with vectors such as ticks and rats. At the time, much of the population believed God was punishing the people who got sick because of sins. Today, we know the bacteria as Yersinia pestis.

Answer 4

The black death, and small pox

Answer 5

the black plague

Answer 6

Laziness...

Answer 7

the plague