duty. 1  something that one is expected or required to do by moral or legal obligation. 2  the binding or obligatory force of something that is morally or legally right; moral or legal obligation. 3  an action or task required by a person's position or occupation; function: the duties of a clergyman.
Familial Mediterranean fever is an inherited disorder that usually occurs in people of Mediterranean origin â including Sephardic Jews, Arabs, Greeks, Italians, Armenians and Turks. But it may affect any ethnic group. Familial Mediterranean fever is typically diagnosed during childhood. While there's no cure for this disorder, you may be able to relieve signs and symptoms of familial Mediterranean fever â or even prevent them altogether â by sticking to your treatment plan. 1  Symptoms.
poliomyelitis. an acute infectious disease occurring sporadically or in epidemics and caused by a virus, usually a poliovirus but occasionally a coxsackievirus or echovirus. Called also polio. Initial clinical characteristics include fever, sore throat, headache, and vomiting, often with stiffness of the neck and back.oliomyelitis. an acute infectious disease occurring sporadically or in epidemics and caused by a virus, usually a poliovirus but occasionally a coxsackievirus or echovirus. Called also polio. Initial clinical characteristics include fever, sore throat, headache, and vomiting, often with stiffness of the neck and back.