Jaagsiekte sheep retrovirus JSRV

Ovine pulmonary adenocarcinoma virus.

Jacareacanga virus (JACV) A serotype of Corriparta virus in the genus Orbivirus. Isolated from the mosquito, Culex (Mel) sp, in Flexal area, Brazil.

Jacunda virus A possible species in the genus Phlebovirus, isolated from a rodent Mioprocta acouchy in the Amazon region of Brazil.

JAK kinase An enzyme involved in activation of the interferon response.

JAK/STAT pathway During interferon induction, JAK kinases participate in the tyrosine phosphorylation of transcrip-tional factors called STAT (signal transducers and activators of transcription). Phosphorylated STAT proteins are transported to the nucleus where they interact with interferon-responsive elements to activate the interferon response.

Levy DE (1995) Semin Virol 6, 81

Jamanxi virus (JAMV) A possible species in the genus Orbivirus. Member of the Changuinola serogroup. Isolated from Lutzomyia sp in Para, Brazil. Not associated with disease in humans.

Jamestown Canyon virus (JCV) A serotype of California encephalitis virus in the genus Bunyavirus. Isolated from mosquitoes, horse and deer-flies in Wisconsin and Colorado, USA and in Canada. Serological studies suggest the white-tailed deer, Odocoileus virginianus, is an important host in Maryland, USA. Shown to cause widespread infection and occasional encephalitis in humans.

Jandia virus A possible species in the genus Orbivirus, isolated from sandflies in the Amazon region of Brazil. Not associated with disease in humans.

Japanaut virus (JAPV) A tentative species in the genus Orbivirus. Isolated from culicine mosquitoes and a bat in the Sepik district of New Guinea. Not reported to cause disease in humans.

Japanese B virus Synonym for Japanese encephalitis virus.

Japanese eel herpesvirus Synonym for anguillid herpesvirus 1.

Japanese encephalitis virus (JEV) A species in the genus Flavivirus, a member of the Japanese encephalitis serogroup. Mainly an infection of birds spread by culicine mosquitoes, especially Culex tritae-niorhynchus, but infection of bats may be a factor in winter survival. In humans it causes mild febrile illness but a few cases show signs of encephalitis. There may be paresis and sequelae are common. The case fatality rate is 5-40% in different outbreaks. Encephalitis occurs in horses. Domestic pigs are often infected and have a viremia. Virus found in Asia from Siberia to Malaysia and southern India. Replicates in eggs, the best method of infection being into the yolk-sac.

Jensen sarcoma cell line

Replication also occurs in cell cultures of chick and various mammalian tissues, as well as mosquito cells. Causes encephalitis on i.c. injection of mice, hamsters and monkeys. Inactivated vaccine is used in Japan, Korea, Taiwan and China. In Japan and China an attenuated vaccine is now licensed and is very effective. The attenuated vaccine in Japan is used only for pigs.

Synonyms: Japanese B virus; Russian autumn encephalitis virus.

Igarashi A (1999) In Encyclopedia of Virology, Second edition, edited by A Granoff and RG Webster. London: Academic Press, p.

Japanese flounder nervous necrosis virus (JFNNV) Nodaviridae. A species in the genus Betanodavirus, isolated from juvenile fish in a commercial hatchery in Japan.

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