The Rest of the RNA Viruses Flashcards

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0
Q

What does alpha virus include?

A
  1. Western equine encephalitis (WEE)
  2. Eastern equine encephalitis (EEE)
  3. Venezuelan equine encephalitis (VEE)
  4. Chikungunya virus
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1
Q

What are the 2 viruses that belong to TOGAviridae?

A
  1. Alpha virus

2. Rubivirus

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2
Q

What is the morphology of TOGAviridae?

A
  1. Positive single-stranded RNA
  2. Non segmented
  3. Icosahedral symmetry
  4. Replicates in cytoplasm
  5. Enveloped
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3
Q

Is there a vector for Alpha virus?

A

Yes - mosquitos.

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4
Q

Is there a vector for Rubivirus?

A

No - spread by respiratory secretions.

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5
Q

What are the WEE, EEE, VEE symptoms?

A
  1. Headache and fever
  2. Altered level of consciousness
  3. Focal neurologic deficits
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6
Q

What are the chikungunya symptoms?

A
  1. Initially: fever, rash, joint pain.

2. Chronic arthritis.

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7
Q

What happens in rubella (3 day measles)?

A
  1. Fever, lymphadenopathy, and mid flu-like symptoms.
  2. Rash: from forehead to face to torso to extremities (lasts 3 days).
  3. Congenital defects: occurs when women in her first trimester of pregnancy gets exposed.
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8
Q

What genus/species are included in FLAVIviridae?

A
  1. Yellow fever virus
  2. Dengue virus
  3. St.Luis encephalitis
  4. Japanese encephalitis
  5. HCV
  6. West Nile virus
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9
Q

What is the morphology of FLAVIviridae?

A
  1. Positive single-stranded RNA
  2. Nonsegmented RNA
  3. Icosahedral symmetry
  4. Replicates in the cytoplasm
  5. Enveloped
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10
Q

Is there a vector for FLAVIviridae?

A

Vector=mosquito.

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11
Q

What can FLAVIviridae cause?

A
  1. Yello fever
  2. Dengue fever
  3. St.Louis, Japanese, West Nile encephalitis and fever
  4. Hep C
  5. West Nile: fever, meningitis, encephalitis or myelitis that produces flaccid paralysis.
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