| encephalitis viruses, tick-borne | A subgroup of the genus flavivirus that causes encephalitis and haemorrhagic fevers and is found in eastern and western europe and the former soviet union. It is transmitted by tick vectors and there is an associated milk-borne transmission from viraemic cattle, goats, and sheep. (12 Dec 1998) |
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| encephalitis, california | Mosquito-borne infection with california group of the bunyavirus genus. most california encephalitis is caused by the la crosse virus. (12 Dec 1998) |
| encephalitis, epidemic | A viral encephalitis caused by encephalitis viruses, all arboviruses. The severity of the encephalitis depends upon which virus strain causes the infection. The viruses are maintained by inapparent zoonoses in birds and lower vertebrates, and are transmitted to humans via arthropod vectors. (12 Dec 1998) |
| encephalitis, japanese | A form of epidemic encephalitis occurring in japan and other pacific islands, china, manchuria, the former ussr, and probably much of the far east. It may occur as a symptomless, subclinical infection, or as an acute meningoencephalomyelitis with cortical damage and cord lesions resembling those of poliomyelitis. (12 Dec 1998) |
| encephalitis, st. louis | A form of epidemic encephalitis, clinically similar to western equine encephalitis, occurring in late summer and early fall and transmitted usually by mosquitoes of the genus culex. (12 Dec 1998) |
| encephalitis, tick-borne | A disease caused by tick-borne encephalitis virus, a species of flavivirus, and a member of the subgroup encephalitis viruses, tick-borne. Tick-borne encephalitis appears to be a spectrum of disease caused by two related viruses: the european subtype - central european encephalitis virus and the eastern subtype - russian spring-summer encephalitis virus. (12 Dec 1998) |
| encephalitis, viral | Inflammation of the brain caused by viruses. When this is caused by encephalitis viruses, a group of arboviruses, it is referred to as epidemic encephalitis (encephalitis, epidemic). Other viruses, including some herpes viruses, also cause viral encephalitis. (12 Dec 1998) |
| encephalitogen | An agent which evokes encephalitis, particularly with reference to the antigen which produces experimental allergic encephalomyelitis. Origin: encephalitis + G. -gen, producing (05 Mar 2000) |
| encephalitogenic | Producing encephalitis; typically by hypersensitivity mechanisms. See: encephalitogen. (05 Mar 2000) |
| encephalitozoon | A genus of parasitic protozoa originally considered a member of the class sporozoea but now recognised as part of the class microsporea. (12 Dec 1998) |
| encephalitozoon cuniculi | A species of parasitic protozoa. This intracellular parasite is found in the brain, heart, and kidneys of several mammals. Transmission is probably by ingestion of the spores. (12 Dec 1998) |
| Encephalitozoon hellum | A species of Encephalitozoon described from human ophthalmic infections causing punctate keratopathy and corneal ulceration in AIDS patients. (05 Mar 2000) |
| encephalitozoonosis | Infection with protozoa of the genus encephalitozoon. Lesions commonly occur in the brain and kidney tubules. Other sites of infection in mammals are the liver, adrenal glands, optic nerves, retina, and myocardium. (12 Dec 1998) |
| encephalization | In phylogenesis, the migration of function from subcortical centres to the cortex. Synonym: encephalization, telencephalization. (05 Mar 2000) |
| encephalo- | The brain. Compare: cerebro-. Origin: G. Enkephalos, brain (05 Mar 2000) |