Yeah, I think so too. I wish we could get a vaccine for the common cold too 
Yeah, I myself believe that sicknesses and diseases are just a part of life. And these outcomes relate to our decisions as humans both individually and collectively.
If we talk about the air we breathe and how there are chemicals in the air. You can say that all these pollutants are causing our sickness. But will those businesses speak the truth if it's their industrial factories spewing the pollutants causing us to get sick. Will they say that it's those pollutants that are causing these sicknesses and diseases. What if it's the stuff archaeologists dug up like King Tut's tomb or some other sacred site. In my culture, we abandoned places for various reasons, it's why we left places like Chaco Canyon. These were to be left alone and left to wither, but kept there for us to remember from stories passed down. We bury it and leave it be.
We even have a story about sickness in our emergence story. That one bad person came up into this world, and thus caused sickness on a little boy.
For me personally, there's just so much other things out there that cause us sickness and illness more so than Covid. Why are we not focusing on those issues? Like the pollution of the land, sea, and air. Oil spills, air pollution, depletion of soil/destruction of land, are all issues that does affect humans and the quality of life we have.
Then you consider the rise of the Industrial Revolution and it's effects of causing people to become congested in a small area, urbanization.
I believe we humans do things that have either beneficial consequences or detrimental consequences. Yet, are we wise enough to realize and understand whether the outcome is a beneficial or detrimental consequence?