
By Selwyn Duke
If your three children all got sick the day after a new kid came over to play, you’d have a decent clue about who the vector of disease was. This comes to mind with the reintroduction in California of an ancient killer: tuberculosis (TB).
The world’s deadliest infectious disease, TB caused an estimated 1.23 million deaths worldwide in 2024. In fact, approximately 10.7 million people were sickened by it that year. And the disease ranks among the top 10 overall causes of global mortality.
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