| Obligatory | Must not donate if: a) Symptomatic. b) Chronic. c) Recovered, but less than six months from recovery. This applies to both adult and childhood disease. |
| See if Relevant | If treated with immunoglobulin or plasma exchange: Transfusion If treated with immunosuppressive therapy: Immunosuppression |
| Reason for Change | The links have been revised. The phrase, 'Recovered, but has ever had a recurrence' has been removed and 'five years from recovery' has been reduced to six months as both were considered unnecessarily restrictive. |