News Tech Health Planet Earth Strange News Animals History Culture Space Virus A virus is defined as any of a various number of submicroscopic parasites that can infect any animal, plant or bacteria and often lead to very serious or even deadly diseases.
Structural characteristics[ edit ] Basic structural characteristics, such as genome type, virion shape and replication site, generally share the same features among virus species within the same family.
There are five double-stranded DNA families: All of the non-enveloped families have icosahedral capsids.
There is one family of partly double-stranded DNA viruses: These viruses are enveloped. There is one family of single-stranded DNA viruses that infect humans: These viruses are non-enveloped.
There are seven positive single-stranded RNA families: All the non-enveloped families have icosahedral nucleocapsids. There are six negative single-stranded RNA families: All are enveloped with helical nucleocapsids.
There is one family with a double-stranded RNA genome: There is one additional virus Hepatitis D virus which has not yet been assigned to a family but is clearly distinct from the other families infecting humans. There is one family and one genus of viruses known to infect humans that have not been associated with disease: Both of these taxa are non-enveloped single-stranded DNA viruses.
Exceptions are known to this rule: Four families have segmented genomes: All are RNA viruses. Three families are transmitted almost exclusively by arthropods: Bunyavirus, Flavivirus and Togavirus. Some Reoviruses are transmitted from arthropod vectors as well.
All other viruses associated with gastroenteritis are non enveloped. These are tables of the clinically most important  viruses. Comparison table of clinically important virus families and species Family.Aleutian disease is a parvovirus infection characterized by poor reproduction, gradual weight loss, oral and GI bleeding, renal failure and uremia, and high mortality.
Viral heart disease, also known as myocarditis, is a heart condition caused by a attheheels.com virus attacks the heart muscle, causing inflammation and disrupting the electrical pathways that signal.
C. California encephalitis - California encephalitis virus () Candidiasis - Candida (Yeast - not viral) Cat Scratch Fever - Bartonella henselae (Bacterial - not viral) Cellulitis - (Bacterial - not viral) Cervical cancer - human papilloma virus (Papovavirus) CFS - Chronic Fatigue Syndrome - not an infectious disease.
Viral folliculitis is an infrequently reported entity involving viral infections limited to the hair follicle which can be transmitted by direct skin-to-skin contact. When most people hear the word "virus," they think of disease-causing (pathogenic) viruses such as the common cold, influenza, chickenpox, human immunodeficiency virus, and others.
Viruses can affect many areas in the body, including the reproductive, respiratory, and gastrointestinal systems. Aleutian disease is a parvovirus infection characterized by poor reproduction, gradual weight loss, oral and GI bleeding, renal failure and uremia, and high mortality. All color phases of mink may be infected, but light color phases genetically derived from the Aleutian color phase are most.