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Although cholera is rare throughout the developed world, it is [[endemic]] in [[Sub-Saharan Africa]] and other underdeveloped areas, and a common cause of [[mortality]] and [[morbidity]]. <ref name="cdc" /> Untreated cholera has a mortality rate of about 50 percent.

Although cholera is rare throughout the developed world, it is [[endemic]] in [[Sub-Saharan Africa]] and other underdeveloped areas, and a common cause of [[mortality]] and [[morbidity]]. <ref name="cdc" /> Untreated cholera has a mortality rate of about 50 percent.

Cholera came to the European continent in the 19th century as transportation started to develop. There were five large cholera-epidemics throughout Europe, which killed thousands of people.  

Cholera came to the European continent in the 19th century as transportation started to develop. There were five large cholera-epidemics throughout Europe, which killed thousands of people.  

These epidemics sparked the sanitation reforms in large European cities during the 19th century.

These epidemics sparked the sanitation reforms in large European cities during the 19th century, after [[John Snow]] traced a cholera outbreak in London to a single pump.<ref>[http://www.csiss.org/classics/content/8 John Snow: The London Cholera Epidemic of 1854] By Scott Crosier</ref>

==References==

==References==