Rubella Flashcards
1
Q
Is Rubella an RNA or DNA virus?
A
RNA
2
Q
What “family” does Rubella belong to?
A
Rubivirus in the Togaviridae family
3
Q
When is the peak incidence of infection?
A
Late winter and early spring
4
Q
What percentage of Rubella cases are asymptomatic?
A
25 to 50%
5
Q
When is Rubella easiest to transmit?
A
Few days before rash, and 5 to 7 days after the onset of the rash
6
Q
What is the incubation period for Rubella?
A
14 to 23 days
7
Q
What are the symptoms of Rubella?
A
- Generalized erythematous maculopapular rash
- Generalized lymphadenopathy
- Low grade fever
- Usually mild disease with no complications
8
Q
What are the symptoms of Congenital Rubella Syndrome?
A
- Ophthalmologic (cataracts, glaucoma)
- Cardiac (ductus arteriosus)
- Auditory (sensorineural deafness)
- Neurologic (behavior disorders, mental retardation)
9
Q
The occurrence of congenital defects is 50% higher is infection occurs during what period of gestation?
A
During the first month
10
Q
How do you diagnose Rubella?
A
- Throat swab
- Blood, urine, cerebrospinal fluid
- 4 fold or greater rise in antibody titer indicates infection
11
Q
How do you treat Rubella?
A
- Supportive
- Excluded from school for 7 days after onset of rash
- Congenital rubella - considered contagious until 1 year old
