The bubonic plague still kills a few people every year in the United States. Worldwide, cases number in the thousands. Granted, biases and discrimination aren't proper diseases, but they come close given they spread with misinformation.
Isn't an expectation that we can 100% eliminate all that ills us irrational? Doesn't that make this question you ask a leading one?
A panacea for the human condition is not a thing. Suffering exists because of impermanence and will continue to do so through at least next week. That's not to say it's not worth fighting for, but I think any expectation that it can be "eliminated" puts us on the wrong footing for improving things over time.
At the least, it blind us to other truths which may be more evident, such as corporate greed and misuse of the technology we all carry around in our pockets now.