Calf rotavirus See bovine rotavirus

Caliciviridae A family of non-enveloped RNA viruses, 35-40nm in diameter, icosa-hedral with 32 typical surface structures, sometimes described as hollows or cups, hence the name from Latin: calyx = cup. The capsid is composed of 180 protein molecules arranged in dimers to form 90

callitrichine herpesvirus 2 (CalHV-2)

capsomeres arranged in a T=3 icosahe-dral lattice. The genome consists of positive single-stranded RNA of mol. wt. 2.6-2.7 x106 (7.4-8.3 kb in length). During replication, a subgenomic mRNA (2.4kb) is synthesized and encodes the major capsid protein. There is one major virion protein of mol. wt. 58000-60000. A protein of mol. wt. 10-15 x 103 which is essential for infectivity, is covalently linked to the 5' end of virion RNA. Replicates in the cytoplasm. There are four genera: Lagovirus, 'Norwalk-like viruses', 'Sapporo-like viruses' and Vesivirus. Species include Vesicular exanthema of swine virus (the type species, very similar to San Miguel sea lion virus), canine calicivirus, Feline calicivirus, human calicivirus and Rabbit hemorrhagic disease virus. Other viruses in the family (unassigned) include species which infect reptiles, walrus, pigs, cattle, chickens, mink, chimpanzees and even insects.

Carter MJ et al (1992) Virology 190, 443 Cubitt WD (1989) Prog Med Virol 36, 103 Jiang X et al (1991) Science 250, 1580 Studdert MJ (1999) In Encyclopedia of Virology, Second edition, edited by A Granoff and RG Webster. London: Academic Press, p. 217

Calicivirus Formerly a genus in both the family Picornaviridae and the family Caliciviridae. It has now been retired as a genus name.

California encephalitis group Fourteen viruses in the genus Bunyavirus which are antigenically and genetically related and form the species California encephalitis virus. See California serogroup viruses.

California encephalitis virus (CEV) A

species in the genus Bunyavirus belonging to the California encephalitis group. Isolated from mosquitoes in California, Utah, New Mexico and Texas, USA. Has been associated with a few cases of encephalitis in humans. Antibodies to other group members cross-react so that presence of antibodies does not prove presence of a specific virus.

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