| DNA, viral | Deoxyribonucleic acid that makes up the genetic material of viruses. (12 Dec 1998) |
|---|---|
| duck viral enteritis | A viral enteritis of ducks and other waterfowl in Europe, Asia, and the U.S. Caused by an anatid herpes virus 1; manifested by weakness, lethargy, and diarrhoea accompanied by catarrhal haemorrhagic enteritis and echymotic haemorrhages in organs and muscles. Synonym: duck viral enteritis. (05 Mar 2000) |
| duck viral hepatitis | An acute, highly contagious disease of young ducklings caused by an enterovirus and characterised by lethargy, spasmodic paddling and rapid death. (05 Mar 2000) |
| inclusion bodies, viral | An area showing altered staining behaviour in the nucleus or cytoplasm of a virus-infected cell. Some inclusion bodies represent "virus factories" in which viral nucleic acid or protein is being synthesised; others are merely artifacts of fixation and staining. One example, negri bodies, are found in the cytoplasm or processes of nerve cells in animals that have died from rabies. (12 Dec 1998) |
| oncogene proteins, viral | Products of viral oncogenes, most commonly retroviral oncogenes. They usually have transforming and often protein kinase activities. (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) |
| equine viral arteritis | A highly contagious viral disease caused by equine arteritis virus, member of the family Togaviridae, and characterised by a high fever and respiratory and digestive tract signs; the essential lesions involve smaller arteries, with necrosis which may be followed by thrombosis, infarction, haemorrhages, and oedema; abortion is a common result. Synonym: epizootic cellulitis, equine typhoid. (05 Mar 2000) |
| eye infections, viral | Infections of the eye caused by minute intracellular agents. These infections may lead to severe inflammation in various parts of the eye - conjunctiva, iris, eyelids, etc. Several viruses have been identified as the causative agents. Among these are herpes virus, adenovirus, poxvirus, and myxovirus. (12 Dec 1998) |
| feline viral rhinotracheitis | An acute upper respiratory tract infection of cats caused by the feline rhinotracheitis virus; it is frequently fatal in kittens but mild in adults, who sometimes become convalescent carriers of the virus. (05 Mar 2000) |
| absorption fever | An elevation of temperature often occurring, without other untoward symptoms, shortly after childbirth, assumed to be due to absorption of uterine discharges through abrasions of the vaginal wall. (05 Mar 2000) |
| acclimating fever | Elevated temperature with malaise that occurs upon working in a very hot environment. (05 Mar 2000) |
| aden fever | <virology> A tropical disease caused by dengue virus (Arbovirus), that is transmitted by the bite of an infected mosquito of the genus Aedes). Four severity grades of the illness are seen: Grade I: fever and constitutional symptoms. Grade II: grade I plus spontaneous bleeding of skin, gums or gastrointestinal tract. Grade III: grade II plus agitation and circulatory failure. Grade IV: profound shock. Grade I infection is seen most frequently in world travelers, where it is usually self-limited and rarely fatal. The other grades are referred to as dengue haemorrhagic fever and are often fatal. Dengue haemorrhagic fever appears to be an infection by one of the other dengue viruses. Prior immunity to a different dengue virus type appears to be important in the development of the more serious haemorrhagic form. Vaccines are available. Protection from mosquitoes is an important preventive measure. (15 Jan 1998) |
| aestivoautumnal fever | <infectious disease> A tropical parasitic disease caused by one of the genus Plasmodium and carried by infected mosquitoes of the genus Anopheles. This parasite uses red blood cells to complete its reproductive cycle. Common symptoms of an attack include high fever, chills, sweats and body aches. (27 Sep 1997) |
| African haemorrhagic fever | Haemorrhagic fever associated with the morphologically similar but antigenically distinct Marburg and Ebola viruses. See: viral haemorrhagic fever. (05 Mar 2000) |
| african swine fever | A usually fatal iridovirus infection of pigs, characterised by fever, cough, diarrhoea, haemorrhagic lymph nodes, and oedema of the gallbladder. (12 Dec 1998) |