Definition of elegy for English Language Learners. : a sad poem or song : a poem or song that expresses sorrow for someone who is dead.
Hepatitis B was first discovered in 1963 by Dr. Baruch Blumberg and colleagues, who identified a protein (the âAustralia antigenâ that reacted to antibodies from patients with hemophilia and leukemia.
Hepatitis A. By John W. Wood. Hepatitis A is referred to as one of the oldest diseases known to humankind by the World Health Organization (WHO) (1). HAV was first discovered in 1973 by Steven M. Feinstone as a nonenvoloped, spherical, positive stranded RNA virus (1).HAV was an unidentified viral disease prior to this discovery.Hepatitis A is a disease caused by infection from the hepatitis A virus (HAV) (1, 5, 8).HAV has been called epidemic hepatitis, epidemic jaundice, infectious hepatitis, catarrhal jaundice, HA and type A hepatitis in the past according to the WHO (1). The term hepatitis refers to having inflammation of the liver.AV was first discovered in 1973 by Steven M. Feinstone as a nonenvoloped, spherical, positive stranded RNA virus (1). HAV was an unidentified viral disease prior to this discovery. Hepatitis A is a disease caused by infection from the hepatitis A virus (HAV) (1, 5, 8).