Editing Vibrio cholerae (section)

== Disease occurrence ==
''V. cholerae'' has an endemic or epidemic occurrence. In countries where the disease has been for the past three years and the cases confirmed are local (within the confines of the country) transmission is considered to be "endemic."<ref>"Cholera." World Health Organization, World Health Organization, 17 Jan. 2019, www.who.int/news-room/fact-sheets/detail/cholera.</ref> Alternatively, an outbreak is declared when the occurrence of disease exceeds the normal occurrence for any given time or location.<ref name="searo.who.int">"World Health Organization, Disease Outbreaks." World Health Organization, World Health Organization, 8 Mar. 2016, www.searo.who.int/topics/disease_outbreaks/en/.</ref> Epidemics can last several days or over a span of years. Additionally, countries that have an occurrence of an epidemic can also be endemic.<ref name="searo.who.int"/> The longest standing ''V. cholerae'' epidemic was recorded in Yemen. Yemen had two outbreaks, the first occurred between September 2016 and April 2017, and the second began later in April 2017 and recently was considered to be resolved in 2019.<ref name="sciencedaily.com">"Mystery of Yemen Cholera Epidemic Solved." ScienceDaily, ScienceDaily, 2 Jan. 2019, www.sciencedaily.com/releases/2019/01/190102140745.htm.</ref> The epidemic in Yemen took over 2,500 lives and impacted over 1 million people of Yemen.<ref name="sciencedaily.com"/> More outbreaks have occurred in Africa, the Americas, and Haiti.