Editing Encephalitis (section)

==Epidemiology==
[[File:Encephalitis world map-Deaths per million persons-WHO2012.svg|thumb|upright=1.3|Encephalitis deaths per million persons in 2012 {{Div col|small=yes|colwidth=10em}}{{legend|#ffff20|0-0}}{{legend|#ffc020|1-1}}{{legend|#ffa020|2-2}}{{legend|#ff9a20|3-4}}{{legend|#f08015|5-9}}{{legend|#e06815|10-14}}{{legend|#d85010|15-24}}{{legend|#d02010|25-45}}{{div col end}}]]
The [[incidence (epidemiology)|number of new cases a year]] of acute encephalitis in Western countries is 7.4 cases per 100,000 people per year. In tropical countries, the incidence is 6.34 per 100,000 people per year.<ref name="Jmor">{{Cite journal |vauthors=Jmor F, Emsley HC, Fischer M, Solomon T, Lewthwaite P |date=October 2008 |title=The incidence of acute encephalitis syndrome in Western industrialised and tropical countries |journal=Virology Journal |volume=5 |issue=134 |pages=134 |doi=10.1186/1743-422X-5-134 |pmc=2583971 |pmid=18973679 |doi-access=free}}</ref> The number of cases of encephalitis has not changed much over time, with about 250,000 cases a year from 2005 to 2015 in the US. Approximately seven per 100,000 people were hospitalized for encephalitis in the US during this time.<ref name="Venkatesan2015" /> In 2015, encephalitis was estimated to have affected 4.3&nbsp;million people and resulted in 150,000 deaths worldwide.<ref name=GBD2015De/><ref name=GBD2015Pre/> Herpes simplex encephalitis has an incidence of 2–4 per million of the population per year.<ref name="Rozenberg">{{Cite journal |vauthors=Rozenberg F, Deback C, Agut H |date=June 2011 |title=Herpes simplex encephalitis : from virus to therapy |journal=Infectious Disorders Drug Targets |volume=11 |issue=3 |pages=235–250 |doi=10.2174/187152611795768088 |pmid=21488834}}</ref>