Hepatitis Flashcards
Hep A
family and genus
family Picornaviridase
Enterovirus | Hepatovirus
Hep A
other names (3)
- short incubation hepatitis
- infectious hepatitis
- enterovirus 72
- naked
- icosahedral
- ssRNA, 28 nm
resistant to ether, acid, heat @ 60C for 1 hour
identify.
Hep A
Hep A
MOT and Incubation Period
treatment
fecal oral
15-45 days
average: 28 days
treatment: supportive care
Hep A
prevention or treatment
what vaccine?
Twinrix
- inactivated vaccine 2 doses w/ 1 month interval
treatment of water
Hep A
first to appear: ?
detected by solid Ab ELISA: ?
identify
HAV Ag first to appear
IgM anti-Hav detected by solid Ab ELISA
Hep A
immunity detected by competitive inhibition ELISA
IgG anti-HAV
enumerate the primary hepatitis
A, B, C, D, E, G
enumerate the secondary hepatitis
- yellow fever virus
- EBV
- CMV
- HSV
- Rubella
Hep B
family and genus
family Hepadnaviridae
Orthohepadnavirus
Hep B
other names (4)
- Long incubation hep.
- Australian hep.
- Dane particle
- Serum hep.
- enveloped
- icosahedral
- circular
- dsDNA, 42 nm
identify
Hep B
Hep B
MOT and Incubation period
parenteral, perinatal, sexual
IB: 40-180 days
average: 60-90 days
Hep B
treatment (5)
treatment / prevention
- supportive care
- HB immunoglobulin
- interferon
- lamivudine
- liver transplant
inactivated vaccines 3 doses
Hep B
first marker to appear during HBV: ?
ext to appear, high infectivity: ?
no serological signifance; for liver biopsy: ?
identify
first marker to appear during HBV: HBsAg
ext to appear, high infectivity: HBeAg
no serological signifance; for liver biopsy: HBcAg
Hep B
first antibody to appear: ?
lifelong marker HBV infection: ?
anti-HBs: ?
HBV DNA: ?
identify
first antibody to appear: IgM anti-HBc
lifelong marker HBV infection: IgG anti-HBc
anti-HBs: last to appear for immunity
HBV DNA: using PCR
Hep B
window period
anti-HBc
Hep C
family and genus
family FLAVIVIRIDAE
hepacivirus
Hep C
other names (2)
Non-A
Non-B
enveloped, icosahedral, linear, ssRNA, 45 nm
identify
Hep C
Hep C
MOT and Incubation period
parenteral & sexual intercourse
IB: 30 - 50 days
Hep C
treatment and prevention
- supportive care
- interferon
- ribuvirin
- liver transplant
no vaccine available
Hep C
marker/s for diagnosis
anti-HCV & HCV RNA
Hep C
symptoms
- jaundice
- indigestion | difficulty sleeping
- swelling of the feet and legs
- liver complications (failure or cancer)
major cause of liver cirrhosis plus alcoholic hepatitis
HCV | Hep C
Hep D
family and genus
family DELTAVIRIDAE
deltavirus
also known as defective virus | no gene or incomplete virus
- enveloped
- circular
- ssRNA, 37 nm
identify
Hep D
Hep D
MOT and Incubation period
parenteral, sexual intercourse, co-infection with Hep B
IP: 15 - 50 days
HBsAg needed by the virus
Hep E
family and genus
family HEPEVIRIDAE
hepevirus
old family and genus: Calciviridae | Calcivirus
naked, icosahedral, linear, ssRNA, 30 nm
identify
Hep E
Hep E
MOT and Incubation period
fecal-oral route
2-9 weeks
Hep E
prevention and treatment
no vaccine
self-limiting | supportive care
Hep E
enumerate the markers
- HEV Ag
- IgM anti-HEV
- HEV RNA
Hep E
IgM anti-HEV is detected by?
- ELISA
- Western blot
- Fluorescence antibody blocking assay
Hep E
HEV RNA is detected by?
real time PCR
Hep G
family and genus
family FLAVIVIRIDAE
flavivirus
also known as non-A | non-B hepatitis
Hep G
MOT and INCUBATION
morphology?
parenteral, sexual
not established
ssRNA
Interpret
HBsAg: +
HBeAg: -
anti-HBc: -
anti-HBs: -
anti-HBe: -
DNA virus: +
EARLY
HBSag & DNA ra ang positive
Interpret
HBsAg: +
HBeAg: +
anti-HBc: -
anti-HBs: -
anti-HBe: -
DNA virus: +
ACUTE EARLY | ACUTE
postive: HBsAg, HBeAg, DNA
Interpret
HBsAg: +
HBeAg: +
anti-HBc: +
anti-HBs: -
anti-HBe: -
DNA virus: +
CHRONIC
all are positive except anti-HBs & anti-HBe
Interpret
HBsAg: +
HBeAg: -
anti-HBc: +/-
anti-HBs: -
anti-HBe: +/-
DNA virus: +
LATE ACUTE
Interpret
HBsAg: -
HBeAg: -
anti-HBc: +
anti-HBs: +
anti-HBe: +/-
DNA virus: -
RESOLVED
positive: anti-HBc and anti-HBs
Interpret
HBsAg: -
HBeAg: -
anti-HBc: -
anti-HBs: +
anti-HBe: +/-
DNA virus: -
VACCINATED
only anti-HBs ang positive