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Viruses

Phocine distemper virus (PDV) is a pathogenic for pinniped species such as seals. Signs include labored breathing, fever, and nervous symptoms. It was first identified in 1988 as the cause of death of 18,000 harbour seals along the northern European co...

The Molluscum contagiosum virus, MCV, is a virus, in the poxvirus family, that causes the disease Molluscum contagiosum in humans. The virions have a complex structure that is consistent with the structure of the poxvirus family. Since the virus ca...

The cottontail rabbit papilloma virus (CRPV), is a type I virus under the Baltimore scheme and posses a non-segmented dsDNA genome. It infects rabbits by causing keratinous carcinomas usually near the animal's head. These tumors eventually interfere wi...

The B19 virus, referred to as parvovirus B19, was first known human virus in the family of parvovirus. It causes a childhood rash called fifth disease or commonly called slapped cheek syndrome. Discovered in 1975 by Yvonne Cossart, the virus gained its...

Parapoxviruses, belonging to the Poxviridae family, are oval, relatively large, double-stranded DNA viruses. They have a unique spiral coat that distinguishes them from other poxviruses. Some of the viruses are zoonotic but not all. Zoonotic hosts incl...

Papillomaviridae is a taxonomic family of non-enveloped DNA viruses, collectively known as papillomaviruses. There are several hundred species, or types, of papillomaviruses that have been identified. Most infections are asymptomatic or cause small ben...

Norovirus is an RNA virus that causes approximately 90% of epidemic non-bacterial outbreaks of gastroenteritis around the world. It may also be responsible for 50% of all foodborne outbreaks of gastroenteritis in the U.S. It can affect people of all ag...

Mumps virus causes mumps which is a common childhood disease characterized by swelling of the parotid glands and other epithelial tissues causing high morbidity in some cases deafness. Infection is currently restricted to humans while the virus is tran...

Monkeypox virus causes monkeypox in both humans and animals. It was first found in 1958 in macaque monkeys that were being used as laboratory animals. The monkeys are often used for neurological experiments. The virus is typically found in rainforest r...

Merkel cell polyomavirus (MCV or MCPyV), first discovered in January 2008, is one of seven human tumor viruses. It is suspected to cause most of Merkel cell carcinoma which is a rare, aggressive form of skin cancer. Around 80% of Merkel cell carcinoma ...

Marburg virus, or Marburg, is the standard name for the genus of viruses Marburgvirus which contains the species, Lake Victoria Marburgvirus. It causes Marburg Hemorrhagic Fever (MHF) which originated with primates. It originated in Africa and can infe...

Kaposi's sarcoma-associated herpesvirus (KSHV) one of seven currently known human cancer virus, is also the eighth human herpesvirus. Kaposi's sarcoma, caused by the virus, is common in AIDS patients, primary effusion lymphoma, and some types of multic...

Influenza A virus causes influenza in birds and some mammals. It is a genus of the Orthomyxoviridae family of viruses. Although the virus is uncommon several strains have been isolated from wild birds. Some can cause severe disease in domestic poultry ...

A human papillomavirus (HPV), a member of the papillomavirus family, is capable of infecting humans. HPVs establish productive infections in the skin or mucous membranes. Most of the 200 known types cause no symptoms in most people. Some types can caus...

Human immunodeficiency virus (HIV), a lentivirus, causes acquired immunodeficiency syndrome (AIDS) which is a condition in humans were the immune system begins to fail, leading to life-threatening opportunistic infections. Infection is transferred thro...

The Herpesviridae, a large family of DNA viruses, causes disease in animals and humans. Members of this family are known as herpesviruses. They all share a common structure where they are composed of relatively large double-stranded, linear DNA genomes...

Herpes simplex virus 1 and 2 (HSV-1 and HSV-2), are two members of the virus family Herpesviridae that infect humans. They are both ubiquitous and contagious and can spread when an infected person is producing and shedding the virus. Symptoms include...

Hepatitis E virus is an infective organism. The viral particles are 27 to 34 nanometers in diameter. They are non-enveloped and contain a single-strand of positive-sense RNA which is approximately 7300 bases in length. The virus was first visualize...

Hepatitis C virus (HCV) is an enveloped, positive-sense single-stranded RNA virus of the family Flaviviridae. It consists of a core of genetic material surrounded by an icosahedra protective shell of protein. The genome consists of a single open readin...

Hepatitis B virus, HBV, is a part of the Hepadnaviridae family of viruses. HBV can lead to cirrhosis and hepatocellular carcinoma and has been linked to pancreatic cancer. It is classified as a species of the Orthohepadnavirus. Similar viruses have...