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9 Cards in this Set
- Front
- Back
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Viruses in the Picornaviridae family
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1. poliovirus
2. Coxsackie virus 3. Echovirus 4. Enteroviruses |
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Char. of picornaviradae
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1. ss +RNA
2. Enveloped. 3. primary replicatory site = alimentary tract. 4. Icosahedral 5. Make polyproteins 6. Use Ig class receptors. 7. Acid stable, sensitive to formaldehyde, bleach, >50C and ionic detergents. |
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Route of transmission of picornaviradae viruses.
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Entry via aerosol, touch, fecal ingestion...Replication in oro-pharynx & tonsil....Replication in Peyer's patches (1 viremia)...Excreted in feces or goes to 2 viremia in tissues
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Seasonal peak of enteric viruses.
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in NE in late winter/early spring.
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Primary difference b/w CoxA and CoxB manifestations.
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Cox A= meningitis, herpangina, HF& disease, respiratory illness.
Cox B= cardiac./ |
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What is CAR?
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a receptor shared by Cox B and adenovirus.
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Caused by echovirus
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meningitis
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Caused by enteroviruses
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meningitis
Myocarditis Enterovirus conjunctivitis Respiratory illness |
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Char of norwalk virus.
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vomiting and naseua, 2 day onset with 24 hours of severe vomiting. Primarily in older children & adults. Causes 90% of food-related gastroenteritis.
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