How tuberculosis reshaped our immune systems

Think of humanity’s worst plagues, and the Black Death, the Spanish flu, and COVID-19 all come to mind. Millions have died in those deadly pandemics, but their toll pales in comparison with that of tuberculosis (TB), which has killed more than 1 billion people over the past 2000 years—and still kills 1.5 million people worldwide every year. But how and when TB got to be so deadly has long been a mystery.

Read more…