what IS tuberculosis, why is it so deadly, and why did it take humanity so long to be able to treat it
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Tuberculosis is a mycobacterium. It’s very small and tends to be intracellular. Prior to microscopy, humanity had no way of seeing it.
It’s not as deadly on an individual level but rather because it affects so many people, outside the industrialized world, most people have nbeen exposed to it. A healthy body usually walls it off, but those with depressed immunity or other susceptibilities, can have progressive infections. It typically affects the lungs but can spread throughout the body. It’s currently very resistant to many antibiotics which makes it harder to treat and more deadly
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