People die to diseases whose cures are insufficiently practical. It's still a technological problem. Make them cheaper, make them more easily administrated, make them effective after the condition has passed beyond a certain point - these are all things further technological progress can potentially do.

Political problems are situations where different elements of society are fundamentally at odds with each other over one option vs another. Freedom vs security, progress vs conservation, reform vs tradition - these are all cases where there are strong arguments on both sides and there fundamentally isn't a right answer. No one is politically in favor of death due to curable disease - eliminate the technological issues that tie curing the disease to something people actually politically oppose, like say higher government spending, and the political opposition goes away.