For millennia, humanity mistook a deadly bacterial infection for a hereditary curse.

Health · Published 3 October 2026 Swipe more like this →

In short: Before the 1882 discovery of the tubercle bacillus, tuberculosis was often viewed as a constitutional fate or a family legacy. In New England, this misunderstanding even sparked vampire panics, where grieving families dug up graves to stop the dead from spreading the wasting disease to their living relatives.

Tuberculosis has shadowed human history for at least 9,000 years, with genetic evidence tracing its origins to Africa. Long before modern medicine, the disease was known by various names—phthisis in ancient Greece, tabes in Latin, and the white plague or consumption in later centuries. Its symptoms, including weight loss and pallor, were so iconic that the disease became a cultural fixture, often romanticized in literature as a slow killer of genius and youth.

For centuries, the cause remained a mystery. In the Middle Ages, scrofula—a form of TB affecting lymph nodes—was called the king's evil, with many believing a royal touch could cure it. By the 1800s, the disease was so prevalent that it accounted for 25% of all deaths in Europe and the United States. It was not until March 24, 1882, that Dr. Robert Koch presented his findings in Berlin, proving that the disease was caused by a specific germ, Mycobacterium tuberculosis, rather than heredity or dissolute living.

The 20th century transformed the fight against the disease. Following early, often ineffective attempts at treatment like tuberculin extracts, researchers developed standardized skin tests and the BCG vaccine. The true turning point arrived in the 1940s with the discovery of streptomycin, followed by isoniazid in 1952. Despite these medical advancements, TB remains a significant global health burden, with millions of new cases reported annually. Today, public health efforts focus on identifying and treating both active disease and latent infections to prevent further transmission.

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