Hepatits Flashcards
HBV
Serum
IgM anti-HAV
Recent HAV infection
Dane particle
Another name for HBV
Etiologic agent for hepatitis B
HbsAg
Surface marker in acute disease and carrier state
anti-HBs
Indicates:
Active immunity to HBV (past infection)
Passive immunity from HBIG
Immune response from HB vaccine
HbeAg
Hepatitis B e antigen
High infectivity
anti-Hbe
Low titer HBV (low degree infectivity)
anti-HBc
antibody to hepatitis B core antigen
indicates prior HBV infection
IgM anti-HBc
IgM class antibody to hepatitis B indicates recent HBc infection
HBV-DNA
DNA of HBV
detected by nucleic acid amplification
HAV transmission
fecal-oral route
waterborne and food-borne
blood
HAV fecal-oral route of transmission
most common transmission
through close contact in unsanitary conditions
HAV waterborne and food-borne transmission
epidemics may occur when sanitation is inadequate.
contaminated water
infected food handlers
HAV blood transmission
earliest days of active disease the blood contains transient hepatitis A viruses
transmission by blood transfusion is rare
HAV incubation
15-50 (or 45?) with an average of 30 days