| Obligatory | Known exposure. |
| Discretionary | No known exposure: |
| See if Relevant | |
| Additional Information | Hepatitis A immunization is advised before travel to parts of the world where other infections relevant to donating such as malaria are common. The donor should be asked about any relevant travel history. Hepatitis A immunization may be combined with Hepatitis B immunization. If less than 6 months from immunisation following known exposure, the donor may be accepted following individual risk assessment if the risk of delaying transplant outweighs the risk of transmission of hepatitis A.
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| Reason for Change | The deferral period for immunization post known exposure has been reviewed following guidance from Public Health England. |