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The flashcards below were created by user
kyleannkelsey
on FreezingBlue Flashcards.
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What causes Herpangina?
Coxsackievirus A
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What group usually gets Coxsackievirus?
Children Ages 1-7
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What is the size of Herpangina lesions?
2-4 mm
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What is the difference between Herpangina and foot and mouth disease?
- Location of lesions
- Herpangina = oral
- Foot and mouth = oral and hands and feet
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What type of virus is Hep A?
Enterovirus
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Is Hep A chronically carried?
No
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What is the principal reservoir for Hep A?
- Asymptomatic, short term carriers
- People with clinical disease
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How is Hep A transmitted?
Fecal oral route
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Describe the route of pathogenisis of Hep A:
- Fecal oral transmission
- Multiplies in small inestine
- Enters blood and goes to the liver
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What is the incubation period for HAV?
2-7 weeks
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Describe the treatment needed for Hep A infections:
Sel-limiting
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What are the symptoms of most Hep A infections?
- Vague, flu-like
- jaundice
- dark urine
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What is the incidence of Hepatitis in HAV?
- <1%
- What type of vaccine is available for HAV?
- Inactivated viral vaccine
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What type of HAV vaccine is only available in China?
Attenuated
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What can be given to people entering Hep A endemic areas?
Pooled immune serum globulin
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how many serotypes are associated with the common cold?
More than 110
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What is Rhinovirus sensitive to?
Acid
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What is the ideal temp for Rhinovirus?
33 degrees C
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What makes Rhinovirus vaccine unlikely?
Unique surface structures of serotypes
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How are Rhinoviruses transmitted?
- contaminated hands
- Fomites
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How are Rhinoviruses treated?
Treat the symptoms only
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Why don't we develop immunity to colds?
Pocket antigens
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What are examples of Calciviruses?
Norovirus
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What is the cause of 1/3 of all viral gastroenteritis cases?
Norovirus (Norwalk agent)
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How is Norovirus transmitted?
- Fecal oral routes
- May be airborne
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Is Norovirus very infectious?
Yes, very infectious
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What groups does Norovirus infect?
- All ages
- All times of the year
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What is the incubation period for Noroviruses?
12-48 hours
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When does shedding begin for Norovirus?
Before onset of symptoms and last up to 100h
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