| FUS | feline urologic syndrome; first-use syndrome |
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| FVR | feline viral rhinotracheitis; forearm vascular resistance |
| FPV | Feline panleukopenia virus |
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| FPV | Feline parvovirus |
| FeSV | Feline sarcoma virus |
| influenza viruses | Virus's of the family Orthomyxoviridae which cause influenza and influenza-like infections of humans and other animals; virus's included are influenza virus types A and B of the genus Influenzavirus, causing, respectively, influenza A and B, and influenza virus type C, which probably belongs to a separate genus and causes influenza C. (05 Mar 2000) |
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| 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) |
| endemic influenza | Influenza, usually of a less severe type, occurring with some degree of regularity during the winter season, especially in the larger cities of the world. Synonym: influenza nostras. (05 Mar 2000) |
| equine influenza | <veterinary, virology> A highly contagious upper respiratory infection of horses and other equids caused by equine strains of influenza virus type A. It is characterised by fever and respiratory signs similar to but more severe than those of equine rhinopneumonitis; oedema of the lower trunk and limbs (epizootic cellulitis) may occur; the disease is frequently fatal when secondary bacterial pneumonia intervenes. (05 Mar 2000) |