A brain disease that is characterized as an acute inflammation of the brain with flu-like symptoms. [ http://purl.obolibrary.org/obo/ECO_0007638 url:http://en.wikipedia.org/wiki/Encephalitis url:http://www.mayoclinic.org/diseases-conditions/encephalitis/basics/definition/con-20021917 url:http://www.nlm.nih.gov/medlineplus/encephalitis.html http://purl.obolibrary.org/obo/ECO_0007637 http://purl.obolibrary.org/obo/ECO_0007644 ]