| HEV | health and environment; hemagglutinating encephalomyelitis virus; hepatitis E virus; hepato-encephal... |
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| SFV | Semliki Forest virus; shipping fever virus; Shope fibroma virus; squirrel fibroma virus |
| CAEV | caprine arthritis-encephalitis virus |
| CEEV | Central European encephalitis virus |
| CEV | California encephalitis virus; Citrus exocortis viroid |
| encephalitis virus, japanese | A species of flavivirus, one of the japanese encephalitis virus group (encephalitis viruses, japanese), which is the aetiological agent of japanese encephalitis found in asia, southeast asia, and the indian subcontinent. (12 Dec 1998) |
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| encephalitis virus, st. louis | A species of flavivirus, one of the japanese encephalitis virus group (encephalitis viruses, japanese), which is the aetiologic agent of st. Louis encephalitis in the united states, the caribbean, and central and south america. (12 Dec 1998) |
| encephalitis virus, venezuelan equine | A species of alphavirus that is the aetiologic agent of equine encephalomyelitis in humans and equines. It is seen most commonly in parts of central and south america. (12 Dec 1998) |
| encephalitis virus, western equine | A species of alphavirus that is the aetiologic agent of equine encephalomyelitis in humans and equines in the united states, southern canada, and parts of south america. (12 Dec 1998) |
| Japanese B encephalitis virus | A virus of the genus Flavivirus (group B arbovirus) occurring particularly in Japan but probably widespread throughout Southeast Asia; the virus is normally present in humans, especially in children, as an inapparent infection, but may cause febrile response and sometimes encephalitis; it may cause encephalitis in horses and abortion in pigs; wild birds are probably the natural hosts and culicine mosquitoes the vectors. Synonym: Russian autumn encephalitis virus. (05 Mar 2000) |
| fox encephalitis virus | A virus causing infectious canine hepatitis in dogs. Synonym: fox encephalitis virus, Rubarth's disease virus. (05 Mar 2000) |
| Pahvant Valley fever | <infectious disease, microbiology> A rare infection of rabbits and rodents caused by the bacteria Francisella tularensis. Francisella tularensis is found in many animals (rabbits, rodents) and may be transmitted by direct contact or via insect bite (ticks and deer-fly). Humans can also contract the illness via the direct contact with the infected animal carcass (break in the skin). The illness is characterised by an ulcerative lesion at the site of the inoculation with regional lymph node swelling, pneumonia, fever, chills, headache, muscle pains and joint stiffness. Risk factors include an exposure to rabbits or recent tick bite. A vaccine is available for high risk workers. Treatment is with streptomycin or tetracycline. Tularaemia is fatal in 5% of untreated cases and in less than 1% of treated cases. Incidence: less than 200 cases per year (USA). Origin: Gr. Haima = blood (18 Jul 2002) |
| Pahvant Valley plague | <infectious disease, microbiology> A rare infection of rabbits and rodents caused by the bacteria Francisella tularensis. Francisella tularensis is found in many animals (rabbits, rodents) and may be transmitted by direct contact or via insect bite (ticks and deer-fly). Humans can also contract the illness via the direct contact with the infected animal carcass (break in the skin). The illness is characterised by an ulcerative lesion at the site of the inoculation with regional lymph node swelling, pneumonia, fever, chills, headache, muscle pains and joint stiffness. Risk factors include an exposure to rabbits or recent tick bite. A vaccine is available for high risk workers. Treatment is with streptomycin or tetracycline. Tularaemia is fatal in 5% of untreated cases and in less than 1% of treated cases. Incidence: less than 200 cases per year (USA). Origin: Gr. Haima = blood (18 Jul 2002) |
| valley | Origin: OE. Vale, valeie, OF. Valee, valede, F. Vallee, LL. Vallata, L. Vallis, valles. See Vale. 1. The space inclosed between ranges of hills or mountains; the strip of land at the bottom of the depressions intersecting a country, including usually the bed of a stream, with frequently broad alluvial plains on one or both sides of the stream. Also used figuratively. "The valley of the shadow of death." (Ps. Xxiii. 4) "Sweet interchange Of hill and valley, rivers, woods, and plains." (Milton) Deep and narrow valleys with abrupt sides are usually the results of erosion by water, and are called gorges, ravines, canons, gulches, etc. 2. The place of meeting of two slopes of a roof, which have their plates running in different directions, and form on the plan a reentrant angle. The depression formed by the meeting of two slopes on a flat roof. Valley board, a roof having one or more valleys. See Valley, 2, above. Source: Websters Dictionary (01 Mar 1998) |
| valley fever | A fungal infection caused by the fungus Coccidioides immitis. Exists in two forms: primary disease, which is a self-limited respiratory infection (requires no treatment) and a progressive form (diffuse and granulomatous), that can involve almost any part of the body. Approximately 60% of infections cause no symptoms and are identified only by skin testing. Immunocompromised patients (AIDS) are at greatest risk for disseminated disease. Symptoms include cough, anorexia, fever, weight loss and joint pains. Complications include pleural effusion and dissemination. There is a poor prognosis for disseminated disease. Treatment includes amphotericin B for lung infection. Itraconazole and fluconazole are also useful agents. (27 Sep 1997) |
| valley segment | That portion of a stream network with similar morphologies and governing geomorphic processes identified by valley bottom and sideslope geomorphic characteristics. (05 Dec 1998) |
| mekong valley | The geographic area of the mekong valley in general or when the specific country or countries are not indicated. Usually includes cambodia, indochina, and laos. (12 Dec 1998) |
| rift valley fever | A febrile disease resembling dengue. It is caused by a mosquito-borne arbovirus. (12 Dec 1998) |
| San Joaquin Valley disease | A disease common in the San Joaquin Valley of California and certain additional areas in the southwestern U.S. As well as the Chaco region of Argentina, caused by inhalation of the arthroconidia of Coccidioides immitis; acute onset of symptoms resemble pneumonia or pulmonary tuberculosis, productive of sputum usually containing spores of the fungus, and accompanied by aches, malaise, severe headache, and occasionally an early erythematous or papular eruption; erythema multiforme or erythema nodosum may appear; the coccidioidin test is positive. Synonym: desert fever, San Joaquin fever, San Joaquin Valley disease, San Joaquin Valley fever, valley fever. (05 Mar 2000) |
| San Joaquin Valley fever | A disease common in the San Joaquin Valley of California and certain additional areas in the southwestern U.S. As well as the Chaco region of Argentina, caused by inhalation of the arthroconidia of Coccidioides immitis; acute onset of symptoms resemble pneumonia or pulmonary tuberculosis, productive of sputum usually containing spores of the fungus, and accompanied by aches, malaise, severe headache, and occasionally an early erythematous or papular eruption; erythema multiforme or erythema nodosum may appear; the coccidioidin test is positive. Synonym: desert fever, San Joaquin fever, San Joaquin Valley disease, San Joaquin Valley fever, valley fever. (05 Mar 2000) |