Herpes Viruses Flashcards
how many members are there in the human herpes virus family?
8
what is the envelope structure of these viruses?
dsDNA (double stranded)
HSV I and II, what do each cause?
HSV I = cold sores
HSV II = genital herpes
Where does the virus lie latent?
it enters the periphery sensory nerves and migrates along axons to sensory nerve ganglia in the CNS
In what form is the virus in whilst latent?
episome (not integrated)
How is latency of HSV broken?
physical = injury, UV, hormones, menstruation psychological = stress, emotional upset
How is HSV treated?
aciclover or other antivirals
why should healthcare workers wear gloves when examining mouths?
to prevent hepatic whitlow (lesions on finger)
In what 2 ways can varicella zoster virus occur?
through RT or conjunctiva
what is HHV type 3?
varicella zoster virus
when is varicella zoster virus dangerous?
on reactivation (shingles) affecting cranial nerves
What is Epstein Barr virus and what are the symptoms?
glandular fever
- fever, sore throat, fatigue, swollen glands
what is the route of transmission of Epstein Barr?
saliva
how long does it take for Epstein Barr to resolve?
2-6 weeks
how long does it take relapses to occur of Epstein Barr?
6-12 months following infection
