Category Internal Medicine

Viral Hemorrhagic Fevers

Definition Viral hemorrhagic fever is an acute systemic illness classically involving fever, a constellation of initially nonspecific signs and symptoms, and a propensity for bleeding and shock. The Pathogens Viral hemorrhagic fever may be caused by more than 30 different…

Enteroviruses

Definition The enteroviruses belong to the genus Enterovirus in the family Picornaviridae. With the advent of molecular virology, the more than 110 recognized strains are classified on the basis of phylogenetic analysis of the nucleic acid sequence of VP1, which…

Epstein-Barr Virus Infection

Definition Epstein-Barr virus (EBV), a member of the gamma human herpesvirus family, is the etiologic agent of infectious mononucleosis and of a diverse assortment of neoplastic and lymphoproliferative syndromes. Epidemiology Ubiquitous in the human population, EBV is found in 90…

Cytomegalovirus

Definition Cytomegalovirus (CMV) is a member of the herpesvirus family and shares, with the other members, the ability to establish a long-lived latent infection. Most of the clinical diseases caused by this virus result from reactivation of latent virus in…