Oh that's a tough one! This is a little bit dependent on the case since some outcomes could potentially be seen as signs/symptoms. For the most part, I would not mark outcomes of the disease, nor would I mark treatment outcomes.
In your examples, I would not mark "death in infancy" nor would I mark "sequential abdominal punctures were unsuccessful". However, I might mark "pregnancies which resulted in termination" (miscarriages) as a symptom of a disease if the doc was about a disease of the reproductive system. But I would NOT mark it if the doc was about the lethality of a genetic disease to embryonic/fetal development (outcome).
Not sure if that helps at all, but I think this one has a bit of context-dependence.