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21 Cards in this Set
- Front
- Back
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HAV: Virus family, nucleic acid type, envelope, incubation period, transmission, carriers
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Virus family: ssRNA picornavirus
Envelope: no Incubation period: Short (3 weeks) Transmission: Fecal-oral Carriers: No |
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HBV: Virus family, nucleic acid type, envelope, incubation period, transmission, carriers
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Virus family: dsDNA hepadna virus
Envelope: yes Incubation period: Long (3 months) Transmission: Parenteral, sexual, in utero Carriers: Yes |
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HCV: Virus family, nucleic acid type, envelope, incubation period, transmission, carriers
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Virus family: ssRNA flavivirus
Envelope: yes Incubation period: Variable (2 weeks to 5 months) Transmission: Blood Carriers: Yes |
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HDV: Virus family, nucleic acid type, envelope, incubation period, transmission, carriers
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Virus family: ssRNA deltavirus
Envelope: yes Incubation period: Variable (2 weeks to 2 months) Transmission: Parenteral, sexual, in utero Carriers: Yes |
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HEV: Virus family, nucleic acid type, envelope, incubation period, transmission, carriers
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Virus family: ssRNA calicivirus
Envelope: no Incubation period: Variable (2 weeks to 2 months) Transmission: Fecal-oral Carriers: No |
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Characterize Hepatitis A
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1. Asymptomatic (usually) 2. Acute 3. Alone (no carriers; naked ssRNA)
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Characterize Hepatitis B
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Blood borne
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Characterize Hepatitis C
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1. Chronic 2. Cirrhosis 3. Carcinoma 4. Carriers
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Characterize Hepatitis D
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1. Defective 2. Dependent on HBV
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Characterize Hepatitis E
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1. Enteric 2. Expectant mothers (high mortality rate) 3. Epidemics
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What does IgM HAVAb measure?
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IgM antibody to HAV. Best test to detect active Hepatitis A.
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What does HBsAg measure?
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HBV surface antigen. Continued presence indicates carrier state.
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What does HBsAb measure?
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Antibody to HBsAg. Provides immunity to hepatitis B.
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What does HBcAg measure?
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Antigen associated with core of HBV, doesn't seem to be measured.
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What does HBcAb measure?
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Antibody to core antigen. Positive during window period (no HBsAg or HBsAb detected). IgM HBcAb is an indicator of recent disease.
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What does HBeAg measure?
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A second different antigenic determinant in the HBV core. Important indicator of transmissibility. (BEware!)
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What does HBeAb measure?
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Antibody to e antigen; indicates low transmissibility.
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Characterize this patient: HBsAg is positive; HBsAb is negative; HBcAb is positive (IgM);
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Acute disease. (HBcAb is IgM in acute stage, and IgG in chronic or recovered stage.)
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Characterize this patient: HBsAg is negative; HBsAb is negative; HBcAb is positive;
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Window phase, follows acute infection.
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Characterize this patient: HBsAg is negative; HBsAb is positive; HBcAb is positive;
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Complete recovery.
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Characterize this patient: HBsAg is positive; HBsAb is negative; HBcAb is positive (IgG);
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Chronic carrier. (Surface antibody is present, but bound to surface antigen.)
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