Hospice Care

[Liwet]

As soon as a colonist hits 50% on a disease, you can add an Operations bill for "Administer Hospice care."  You can no longer give medicine to fight the disease but the disease progression dramatically drops and its effects are halved (or more).  The colonist gets some kind of mood buff and the effects of euthanization of the patient on the rest of the colony are decreased.