MIC 301 Lecture Notes - Lecture 25: Respiratory Tract, Polio Vaccine, Coxsackie A Virus
30 Mar 2016
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Document Summary
Rna viruses only agents that store geneic informaion in rna molecules. Categorizes by: genomic structure, presence of an envelope, size and shape of their capsid. Picornaviridae smallest of animal viruses cause human disease in: rhinovirus, enterovirus, hepatovirus. Treatment pleaconaril can reduce severity and duraion of colds and must be taken at the onset of symptoms. Virus shedding respiratory secreions (aerosols) and nasal secreions (contaminaion of hands and issues) Infect pharynx and intesine and spread via blood, infecing various cells in the body. 3 main types: polioviruses, coxsackieviruses, echoviruses poses great risk to fetus and newborns no aniviral therapy is efecive usually not diagnosed (mild symptoms) except in severe cases. Survives on various surfaces and resistant to household disinfectants. Signs/symptoms feer, faigue, nausea, anorexia and jaundice. Does not cause chronic liver disease usually full recovery. Polio is caused by one of three serotypes of poliovirus. Minor polio (5%), non-speciic symptoms fever, headache, malaise, sore throat.
