The Rest of the RNA Viruses Flashcards
0
Q
What does alpha virus include?
A
- Western equine encephalitis (WEE)
- Eastern equine encephalitis (EEE)
- Venezuelan equine encephalitis (VEE)
- Chikungunya virus
1
Q
What are the 2 viruses that belong to TOGAviridae?
A
- Alpha virus
2. Rubivirus
2
Q
What is the morphology of TOGAviridae?
A
- Positive single-stranded RNA
- Non segmented
- Icosahedral symmetry
- Replicates in cytoplasm
- Enveloped
3
Q
Is there a vector for Alpha virus?
A
Yes - mosquitos.
4
Q
Is there a vector for Rubivirus?
A
No - spread by respiratory secretions.
5
Q
What are the WEE, EEE, VEE symptoms?
A
- Headache and fever
- Altered level of consciousness
- Focal neurologic deficits
6
Q
What are the chikungunya symptoms?
A
- Initially: fever, rash, joint pain.
2. Chronic arthritis.
7
Q
What happens in rubella (3 day measles)?
A
- Fever, lymphadenopathy, and mid flu-like symptoms.
- Rash: from forehead to face to torso to extremities (lasts 3 days).
- Congenital defects: occurs when women in her first trimester of pregnancy gets exposed.
8
Q
What genus/species are included in FLAVIviridae?
A
- Yellow fever virus
- Dengue virus
- St.Luis encephalitis
- Japanese encephalitis
- HCV
- West Nile virus
9
Q
What is the morphology of FLAVIviridae?
A
- Positive single-stranded RNA
- Nonsegmented RNA
- Icosahedral symmetry
- Replicates in the cytoplasm
- Enveloped
10
Q
Is there a vector for FLAVIviridae?
A
Vector=mosquito.
11
Q
What can FLAVIviridae cause?
A
- Yello fever
- Dengue fever
- St.Louis, Japanese, West Nile encephalitis and fever
- Hep C
- West Nile: fever, meningitis, encephalitis or myelitis that produces flaccid paralysis.