This is what is terrifying... The longer it goes on, and the more people it infects, the more of a chance that this could happen statistically.
We've far reached the point that the only other organism we really worry about is other humans.
You are delusional, as is most of humanity on this issue. Medical technology is still primitive and crude, and often does as much harm as good.
Antibiotics alone are nothing short of a miracle. In the old days you could easily die from a simple scratch if you got an infection. Newborn children died left, right and center, and for the mother giving birth was often a death sentence as well, to the point people had specific gods to pray just for that. Drinking beer was healthier than drinking water because there were no purification systems. People were considered old geezers if they reached 50 years old. Famine would kill people in mass because your fields/herds suddenly caught a disease and you could only watch all your food rot away and starve.
Seriously, you have absolutely no idea of how many lives are currently being saved by modern medicine. Antibiotics and vaccines and anesthesics and x-rays all rock so hard you could make an anime out of it that would make TTGL look like a tame show.
Sure, some diseases may be evolving to become more resistant, but that's still miles better than letting them rampage around killing kids and moms at their leisure.
We are still almost completely defenseless when it comes to viral infections (go do some research on how many viral infections are actually curable).
Mallaria kills hundreds of thousands per year, when we can cure the infected, and most of the world has zero fucks to give about that. Because hundreds of thousands is still less than 0,01% of the
(still growing) human world population of 7 billions (and most victims are poor people in countries usually filled with corruption and civilian unrest, which doesn't help matters I guess).
Anyway there's a lot to say about strength in numbers. Virus can kill a lot of people, but there's a lot more humans out there to resist it (even smallpox didn't kill more than 40% of the victims, and ironically if a disease gets too deadly it just means less hosts around to spread it).
We've been fighting diseases ever since history started being recorded. And we're winning so far.
We're one good pandemic away from mass chaos and global economic collapse.
We already had a couple economic collapses and mass chaos in the form of two world wars over the last century, things got better.
Heck, look at Germany, basically reduced to rubble two times over the last century, still demonized to hell and back, and right now the most productive country of Europe!
Someone's crisis is somebody else's opportunity. If people die, there's still plenty of other people around left to pick up the pieces and rebuild.