| flu | influenza |
|---|---|
| HEV | health and environment; hemagglutinating encephalomyelitis virus; hepatitis E virus; hepato-encephal... |
| SFV | Semliki Forest virus; shipping fever virus; Shope fibroma virus; squirrel fibroma virus |
| ASF | African swine fever; aniline-sulfur-formaldehyde [resin] |
| ASP | abnormal spinal posture; acute symmetric polyarthritis; African swine pox; aged substrate plasma; al... |
| influenza a virus, porcine | Strains of influenza a virus causing influenza and pneumonia in domestic pigs. (12 Dec 1998) |
|---|---|
| influenza b virus | Species of the genus influenzavirus a, b that cause influenza and other diseases in humans only. Antigenic variation is less extensive than in type a viruses (influenza a virus) and consequently there is no basis for distinct subtypes or variants. Epidemics are less likely than with type a and there have been no pandemics. (12 Dec 1998) |
| influenza virus | <organism, virology> Member of the Orthomyxoviridae that causes influenza in humans. There are three types of influenza virus. Each type of virus has a stable nucleoprotein group antigen common to all strains of the type, but distinct from that of the other type; each also has a mosaic of surface antigens (haemagglutinin and neuraminidase) which characterise the strains and which are subject to variations of two kinds: 1) a rather continual drift that occurs independently within the haemagglutinin and neuraminidase antigens; 2) after a period of years, a sudden shift (notably in type A virus of human origin) to a different haemagglutinin or neuraminidase antigen. The sudden major shifts are the basis of subdivisions of type A virus of human origin. Type A causes the world wide epidemics (pandemics) of influenza and can infect other mammals and birds. Type B only affects humans. Type C causes only a mild infection. Types A and B virus evolve continuously, resulting in changes in the antigenicity of their spike proteins, preventing the development of prolonged immunity to infection. The spike proteins, external haemagglutinin and neuraminidase have been studied as models of membrane glycoproteins. Strain notations indicate type, geographic origin, year of isolation, and, in the case of type A strains, the characterizing subtypes of haemagglutinin and neuraminidase antigens (e.g., A/Hong Kong/1/68 (H3 N2); B/Hong Kong/5/72). (08 Mar 2000) |
| influenza virus vaccines | Influenza virus grown in embryonated eggs and inactivated, usually by the addition of formalin; both whole virus and subunit preparations containing haemagglutinins and neuraminidase are used; because of the marked and progressive antigenic variation of the influenza viruses, the strains included are regularly changed following various outbreaks of influenza in order to include most recently isolated epidemic strains of both type A influenza and type B influenza. (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) |
| african swine fever-like viruses | An unnamed, unclassified genus of DNA viruses with a single species: african swine fever virus. (12 Dec 1998) |
| atrophic rhinitis of swine | A disease manifested by atrophy, shrinkage, and often almost complete disappearance of the turbinate bones, accompanied by distortion of the facial bones, sneezing, and stunting of the growth of young animals; caused principally by the bacterium Bordetella bronchiseptica. (05 Mar 2000) |
| gastroenteritis, transmissible, of swine | A condition of chronic gastroenteritis in adult pigs and fatal gastroenteritis in piglets caused by a coronavirus. (12 Dec 1998) |
| vesicular exanthema of swine | A calicivirus infection of swine characterised by hydropic degeneration of the oral and cutaneous epithelia. (12 Dec 1998) |
| coccidia of swine | Eimeria debliecki, the most common and most pathogenic species, involving the small intestine, caecum, and colon; Eimeria scabra, involving the small intestine; Eimeria perminuta, Eimeria spinosa, Eimeria scrofae, Eimeria suis, Eimeria cerdonis, Eimeria porci, and Eimeria neodebliecki believed to have little pathogenicity. See: Isospora. Synonym: coccidia of swine. (05 Mar 2000) |
| swine | <zoology> Any animal of the hog kind, especially one of the domestical species. Swine secrete a large amount of subcutaneous fat, which, when extracted, is known as lard. The male is specifically called boar, the female, sow, and the young, pig. See Hog. "A great herd of swine." Swine grass, the sow thistle. Origin: OE. Swin, AS. Swin; akin to OFries. & OS. Swin, D. Zwijn, G. Schwein, OHG. Swin, Icel. Svin, Sw. Svin, Dan. Sviin, Goth. Swein; originally a diminutive corresponding to E. Sow. See Sow. Source: Websters Dictionary (01 Mar 1998) |
| swine diseases | Diseases of domestic swine and of the wild boar of the genus sus. (12 Dec 1998) |
| swine dysentery | An acute haemorrhagic colitis of swine, often accompanied by gastritis; the small intestines usually are not involved; its primary cause is Treponema hyodysenteriae, and it has a high mortality rate, especially among feeder pigs. (05 Mar 2000) |
| swine erysipelas | An acute and chronic contagious disease of young pigs caused by erysipelothrix insidiosa. (12 Dec 1998) |
| swine fever | An acute, highly contagious disease affecting swine of all ages and caused by the hog cholera virus. It has a sudden onset with high morbidity and mortality. (12 Dec 1998) |