| equine abortion virus | <virology> A herpesvirus reported in the U.S. Europe, and South Africa, causing equine rhinopneumonitis and equine virus abortion. Synonym: equine abortion virus. (05 Mar 2000) |
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| equine virus abortion | A highly contagious abortion of mares, caused by equine rhinopneumonitis virus, a member of the family Herpesviridae. (05 Mar 2000) |
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| Venezuelan equine encephalomyelitis virus | A group A arbovirus of the genus Alphavirus, family Togaviridae, occurring in Venezuela and several other South American countries, in Panama and Trinidad, and occasionally the United States causing Venezuelan equine encephalomyelitis in horses and humans; it seems to be more viscerotropic than neurotropic; the virus is transmitted by Culex mosquitoes. Synonym: VEE virus. (05 Mar 2000) |
| western equine encephalomyelitis virus | A group A arbovirus of the genus Alphavirus, family Togaviridae, occurring in the western United States and parts of South America; it occurs naturally, usually as a symptomless infection in birds, but causes western equine encephalomyelitis in horses and humans following transfer by the bites of mosquitoes, chiefly Culex tarsalis. Synonym: WEE virus. (05 Mar 2000) |
| infectious anaemia virus, equine | A species of lentivirus, subgenus equine lentiviruses (lentiviruses, equine), causing acute and chronic infection in horses. It is transmitted mechanically by biting flies, mosquitoes, and midges, and iatrogenically through unsterilised equipment. Chronic infection often consists of acute episodes with remissions. (12 Dec 1998) |
| eastern equine encephalomyelitis virus | A virus of the genus Alphavirus (formerly group A arbovirus), in the family Togaviridae, occurring in the eastern United States; it is normally present in certain wild birds as an inapparent infection, but is capable of causing eastern equine encephalomyelitis in horses and humans following transfer by the bites of culicine mosquitoes. Synonym: EEE virus. (05 Mar 2000) |
| encephalitis virus, eastern equine | A species of alphavirus causing encephalomyelitis in equidae and humans. The virus ranges along the atlantic seaboard of the united states and canada and as far south as the caribbean, mexico, and parts of central and south america. Infections in horses show a mortality of up to 90 percent and in humans as high as 80 percent in epidemics. (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) |
| equine arteritis virus | <virology> A virus of the genus Pestivirus, a member of the family Togaviridae, that causes equine viral arteritis. It is probably the most common cause of equine influenza and an important equine respiratory disease frequently causing abortion, pneumonia, or other infections. Synonym: infectious arteritis virus of horses. (05 Mar 2000) |
| equine coital exanthema virus | <veterinary, virology> A herpesvirus causing coital exanthema in male and female horses. (05 Mar 2000) |
| equine encephalosis virus | <veterinary, virology> An orbivirus causing equine encephalosis in horses. (05 Mar 2000) |
| equine infectious anaemia virus | <virology> A retrovirus, of the Lentivirinae subfamily, and the cause of equine infectious anaemia. Synonym: swamp fever virus. (05 Mar 2000) |
| equine rhinopneumonitis virus | <virology> A herpesvirus reported in the U.S. Europe, and South Africa, causing equine rhinopneumonitis and equine virus abortion. Synonym: equine abortion virus. (05 Mar 2000) |
| abortion | 1. <obstetrics> The premature expulsion from the uterus of the products of conception of the embryo or of a nonviable foetus. The four classic symptoms, usually present in each type of abortion, are uterine contractions, uterine haemorrhage, softening and dilatation of the cervix and presentation or expulsion of all or part of the products of conception. The expulsion or removal of an embryo or foetus from the mother prematurely, this can be done as an artificial procedure, but it often happens naturally when the mother's body expels the foetus because it has died, has genetic or developmental defects, or because of infection or illness in the mother. Natural abortions are typically called miscarriages. Medically-induced abortions, which can be completed with surgery or with hormone drugs, are performed because the foetus is unwanted, deformed, not likely to live, or endangers the mother's life or health. 2. The premature stoppage of a natural or a pathological process. Origin: L. Abortio (18 Nov 1997) |
| abortion applicants | Individuals requesting induced abortions. (12 Dec 1998) |