Algorithm for the management of household contacts of cases of acute hepatitis A
Modified from the 2009 UK guidelines, Appendix A, page 17.
Text alternative
- Household contact of case of hepatitis A with no history of hepatitis A vaccine or laboratory confirmed hepatitis A
- Branch A: less than or equal to 14 days post exposure
- Branch A1: Chronic liver disease or HIV infection or immuno-suppressed
- Category A1.1. Provide NHIG (because of reduced and delayed immune response to vaccine and risk of severe illness)
- Branch A2: Previously healthy
- Branch A2.1: Aged less than 12 months
- Category A2.1. Vaccinate carers
and/or exclude infant from childcare AND provide NHIG
- Branch A2.2: Aged 12 months to 40 years
- Category A2.2. Provide hepatitis A vaccine
- Branch A2.3: Aged over 40 years
- Category A2.3. Provide NHIG and/or vaccine
- Branch B: over 14 days post exposure (All contacts)
- Branch B1: Non-food handler
- Category B1.1. Provide health and hygiene advice only
- Branch B2: Food handler
- Category B2.1: Conduct risk assessment
Reference
Thomas L and The Hepatitis A Guidelines Group. Guidance for the prevention and control of hepatitis A infection (v1.1). Health Protection Agency (Public Health England); 2009 [cited 2017 13 Apr].