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14 Cards in this Set
- Front
- Back
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What year did the Hepatitis A Vaccine become licensed |
1995 |
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Why are raw shellfish a frequent source of infection of Hepatitis A |
it's a fecal/oral transmitted disease and raw shellfish can concentrate the virus in their tissues if they come from fecally contaminated waters |
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Can HepA be sexually transmitted? |
yes |
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What is the incubation period for HAV |
30 days |
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Is there an antivirus for HAV? |
No |
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Explain HAV immunization |
passive immunization gives short-term protection against the disease if administered within two weeks of exposure (immune globulin by injection after exposure) An effective vaccine composed of inactivated HAV has been available since 1995 CDC recommends vaccination of children at 1 yo and high risk groups |
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explain inactivated vaccines |
killed microorganisms or inactivated viruses. made by treating the pathogen with formalin or another chemical that does not significantly change the surface epitopes The virus can not reproduce yet the body can still create antibodies to it |
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what kind of virus is hepatitis A? |
naked
single stranded RNA plus strand picornavirus family |
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Transmission of HBV |
contact with bodily fluids |
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What are the signs and symptoms of HAV |
Acute illness jaundice fever fatigue clay colored feces vomiting after a period of 30 days |
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What are the signs and symptoms of HBV |
acute asymptomatic to sever |
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what is the incubation period of HBV |
from 2-5 months acute version is rarely fatal, clears virus within weeks to months of initial symptoms chronic version (mostly infants and children) can develop cirrhosis (scarring of liver) liver failure liver cancer other chronic liver disease Between 2,000-4,000 die from HBV-related diseases annually |
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What kind of virus is HBV |
enveloped with mostly double stranded DNA genome (a portion is single stranded) remarkably resistant to environmental conditions Visions can still be infectious after a week outside the body member of the hepadnavirous family (liver + DNA) |
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another name for HBV |
Dane particle |
