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Impact of microbial species on human health

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Is it true that outbreaks of microbial species against the human beings have killed more people than any war?

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A nearly 500 discussion related to the impact of microbial disease and human health. Includes information pertaining to the most devastating microbes throughout history, as well as several links to additional important sources.

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I personally believe that the statement "that outbreaks of microbial species against the human beings have killed more people than any war" is completely true. I've listed a few examples below to back up this claim. There are a huge number of microbial diseases that could be included in this explanation so please feel free to add in as many as you see fit. For the most part I've tried to focus on the microbes that have caused the largest degree of human deaths.

Bubonic plague - caused by infection of Yersinia pestis, a gram negative bacillus that is transmitted to humans from rat fleas. Bubonic plague epidemics have emerged several times during human history. The Black Death, the name given to a specifically bad 1347 epidemic, is claimed to have caused the death of one third of ...

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