hepatitis Flashcards
Hep A type of virus
RNA
Hep A spread and peak age
faecal oral or shellfish, childhood
most common cause of Hep in returned travellers
Hep A acute or chronic?
acute, no chronic!
rare cause of Hep A
EBV
lab Hep A
clotted blood for serology
rise in hep A IgM - recent infection, IgG detectable for life
Hep A control
hygiene vaccine
Hep B type of virus
DNA
Hep B spread
sex, blood, mother to child
Hep B infectivity and chronic vs hep C
hep B - very infectious and less likely to become chronic
hep C - most patients chronic carriers, less infectious
rare cause of hep B
yellow fever virus
Hep B
HbsAg
infectious and infected
Hep B
antiHbsAg
vaccinated and recovered
Hep B
HbeAg
highly infective
Hep B
antiHbcAg
past infection
Hep B DNA titre
high in highly infectious patients
control of Hep B
minimise exposure
vaccination
antiHbe Hep B
low infectivity
Hep C virus type
RNA flavivirus
spread of Hep C
similar to hep B but less so by sex
incubation period of Hep c
4-6weeks
incubation period of Hep B
4-6 months
vaccine to hep C?
no
out come of Hep C
chronic hepatitis or cirrhosis
lab of Hep C
first test for Ab to Hep C
then PCR for Hep C RNA to see if active or past infection