Illnesses take too long
I'd like to hear other opinions on this. What do you think? The illnesses were actually a nice idea. But I think some of them really take too long. I mean, of course, that it shouldn't be over in 1-2 months.

But I have no idea how many years this revolutionary fever has lasted. In the meantime, I've left the Cold War behind me. During the Cold War, I brought all the Wonders of the World from that era and the remaining ones from the World War era. My city has continued to grow, built countless things, and the wave of illness is still not over. I keep getting reports of impending uprisings and have already repelled several rebel attacks, and the wave of illness is still not over. On top of that, 1,000 residents are still unknown whether they are infected, a few hundred are infected, and just over 1,000 have been cured. Despite several clinics, hospitals, mobile doctors, and control stations that also administer vaccinations. I've also used the cannon several times and vaccinated people with it. At least 10 years have passed since then, if not more, and I feel like I'm making hardly any progress. I'm now in the modern era and have just built the huge hospitals, I hope that helps.
I'm also wondering why I'm losing so many residents. As far as I know, this disease isn't considered fatal, and yet I'm still losing workers. The borders are closed, so they can't have run away. I have no idea what's going on here.

It's even worse when you have the deadly virus. Which is really annoying when the disease lasts for years here too and pretty much the entire population dies off.

As I said, nice idea with the diseases, but in my opinion, they're taking way too long. What do you think?