Some other illnesses to consider:
The three biggest causes of blindness are cataracts, glaucoma, and macular degeneration. They are diseases of age, and I think post-Rash medicine would be able to treat only cataracts, and that only by removing the clouded lens. In the modern world, the clouded lens can be replaced with an artificial lens, but the tiny post-Rash population wouldn't be able to produce those. Once the lens was removed, the patient would have to use cataract glasses, which the post-Rash population could grind, but which have been described to me as "better than nothing, but not much better". People with glaucoma or macular degeneration would simply go blind. So you would have more elderly blind people in Y90 than we have today.
I have read that one of the five leading causes of death in medieval Europe was asthma. Today, it can be controlled pretty well (though one of my sister's classmates died of it), but without modern medicine, it would have a much higher death rate. Juvenile diabetes is another disease that would have a high death rate. Type 2 diabetes might be less of a problem since people would have much less to eat and would be much more active.
