Caliciviridae: A family of RNA viruses infecting a broad range of animals. Most individual species are restricted to their natural hosts. They possess a characteristic six-pointed starlike shape whose surfaces have cup-shaped (chalice) indentions. Transmission is by contaminated food, water, fomites, and occasionally aerosolization of secretions. Genera include LAGOVIRUS; NORWALK-LIKE VIRUSES; SAPPORO-LIKE VIRUSES; and VESIVIRUS.Caliciviridae Infections: Virus diseases caused by CALICIVIRIDAE. They include HEPATITIS E; VESICULAR EXANTHEMA OF SWINE; acute respiratory infections in felines, rabbit hemorrhagic disease, and some cases of gastroenteritis in humans.Calicivirus, Feline: A species of the genus VESIVIRUS infecting cats. Transmission occurs via air and mechanical contact.Sapovirus: A genus of the family CALICIVIRIDAE associated with worldwide sporadic outbreaks of GASTROENTERITIS in humans. The first recorded outbreak was in human infants in Sapporo, Japan in 1977. The genus is comprised of a single species, Sapporo virus, containing multiple strains.Vesivirus: A genus of the family CALICIVIRIDAE comprised of species infecting a wide range of organisms. Most members of this genus can be readily propagated in cell culture (as opposed to other genera of Caliciviridae). The type species is VESICULAR EXANTHEMA OF SWINE VIRUS.Norovirus: A genus in the family CALICIVIRIDAE, associated with epidemic GASTROENTERITIS in humans. The type species, NORWALK VIRUS, contains multiple strains.Norwalk virus: The type species in the genus NOROVIRUS, first isolated in 1968 from the stools of school children in Norwalk, Ohio, who were suffering from GASTROENTERITIS. The virions are non-enveloped spherical particles containing a single protein. Multiple strains are named after the places where outbreaks have occurred.Hemorrhagic Disease Virus, Rabbit: A species in the genus LAGOVIRUS which causes hemorrhagic disease, including hemorrhagic septicemia, in rabbits.Vesicular exanthema of swine virus: The type species of the genus VESIVIRUS infecting pigs. The resulting infection is an acute febrile disease which is clinically indistinguishable from FOOT AND MOUTH DISEASE. Transmission is by contaminated food.Gastroenteritis: INFLAMMATION of any segment of the GASTROINTESTINAL TRACT from ESOPHAGUS to RECTUM. Causes of gastroenteritis are many including genetic, infection, HYPERSENSITIVITY, drug effects, and CANCER.Genome, Viral: The complete genetic complement contained in a DNA or RNA molecule in a virus.Molecular Sequence Data: Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories.Phylogeny: The relationships of groups of organisms as reflected by their genetic makeup.Capsid: The outer protein protective shell of a virus, which protects the viral nucleic acid.Open Reading Frames: A sequence of successive nucleotide triplets that are read as CODONS specifying AMINO ACIDS and begin with an INITIATOR CODON and end with a stop codon (CODON, TERMINATOR).RNA, Viral: Ribonucleic acid that makes up the genetic material of viruses.Amino Acid Sequence: The order of amino acids as they occur in a polypeptide chain. This is referred to as the primary structure of proteins. It is of fundamental importance in determining PROTEIN CONFORMATION.Viral Proteins: Proteins found in any species of virus.Base Sequence: The sequence of PURINES and PYRIMIDINES in nucleic acids and polynucleotides. It is also called nucleotide sequence.Cell Line: Established cell cultures that have the potential to propagate indefinitely.
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