Hepatitis

• Incubation period: 1-2 weeks?
• Vaccination
  • Ideally two vaccinations six months apart
  • Children vaccinated between 12-13 months of age
• Immunoglobulin
  • HAV Immunoglobulin considered for houshold contacts of patients with acute hepatitis A.
    • When administered within 2 weeks, 80-90% effective.
    • When administered later, may not prevent HAV, but can attenuate symptoms.

• Incubation period: 2-3 months
• Window period: check core IgM and HBsAg

^  ^  HBsAg  ^  HBsAb  ^  HBcIgM  ^   HBcIgG  ^  HBeAg  ^  HBeAb  ^  HBV DNA  ^  
| Acute infection | + | - | +  | - | + | - | + |
| Resolved infection | - | + | -  | + | - | + | - |
| Vaccinated | - | + | -  | - | - | - | - |
| Chronic infection | + | - | +  | - | + | - | + |
| Inactive carrier | + | - | -  | + | +/- | + | - |
| Active carrier | + | - | -  | + | +/- | + | + |