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Influenza A virus structure. The influenzavirus virion is pleomorphic; the viral envelope can occur in spherical and filamentous forms. In general, the virus's morphology is ellipsoidal with particles 100–120 nm in diameter, or filamentous with particles 80–100 nm in diameter and up to 20 μm long. [5]
Influenza A virus and influenza B virus circulate in humans and cause seasonal epidemics, and influenza C virus causes a mild infection, primarily in children. Influenza D virus can infect humans but is not known to cause illness. In humans, influenza viruses are primarily transmitted through respiratory droplets from
Feline viral rhinotracheitis (FVR) is an upper respiratory or pulmonary infection of cats caused by Feline herpesvirus, also called Feline herpesvirus 1 (FeHV-1), of the family Herpesviridae. It is also commonly referred to as feline influenza , feline coryza , and feline pneumonia but, as these terms describe other very distinct collections of ...
Cat flu is the common name for a feline upper respiratory disease, which can be caused by one or more possible pathogens: Feline herpes virus, causing feline viral rhinotracheitis (cat common cold; this is the disease most associated with the "cat flu" misnomer), Feline calicivirus, Bordetella bronchiseptica (cat kennel cough), or
Feline diseases are often opportunistic and tend to be more serious in cats that already have concurrent sicknesses. Some of these can be treated and the animal can have a complete recovery. Others, like viral diseases, are more difficult to treat and cannot be treated with antibiotics, which are not effective against viruses.
Influenza viruses are members of the family Orthomyxoviridae. [2] Influenza viruses A, B, C, and D represent the four antigenic types of influenza viruses. [3] Of the four antigenic types, influenza A virus is the most severe, influenza B virus is less severe but can still cause outbreaks, and influenza C virus is usually only associated with minor symptoms.
A feline zoonosis is a viral, bacterial, fungal, protozoan, nematode or arthropod infection that can be transmitted to humans from the domesticated cat, Felis catus. Some of these diseases are reemerging and newly emerging infections or infestations caused by zoonotic pathogens transmitted by cats. In some instances, the cat can display ...
Influenza A virus (Alphainfluenzavirus influenzae) [1] or IAV is the only species of the genus Alphainfluenzavirus of the virus family Orthomyxoviridae. [2] It is a pathogen with strains that infect birds and some mammals, as well as causing seasonal flu in humans. [3]