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Tuberculosis: The disease that changed world history


 

Q: Things were quite different in earlier times. Until 250 years ago, the hopes of many patients rested on the medieval healing method of the “royal touch.” What’s that all about?

Gerste: In the Middle Ages, a “healing method” emerged from which not only lepers and other seriously ill people but also those suffering from consumption expected to be saved: the “royal touch,” which was first described by the Frankish king Clovis in 496. This ceremony was based on the idea that the king or queen, anointed by God, could improve or even cure the ailment of a sick person through a brief touch.

With the transition from the Middle Ages to the early modern period, this act, during which thousands often gathered in front of the ruler’s residence, was practiced on a large scale. The sufferers passed by the anointed ruler as if in a procession and were briefly touched by him or her. The extremely few “successes” were of course exploited by royal propaganda to proclaim the blessing that the reign of the king or queen meant for the country. But on those who nevertheless fell victim to TB or another ailment, the chroniclers remained silent.

Charles II of England, who ruled from 1660 to 1685 during the Restoration after the English Civil War, is said to have touched 92,102 sick people during this period, according to contemporary counts. The record for a single day’s performance is probably held by Louis XVI of France, who is said to have touched a total of 2,400 sufferers on June 14, 1775. Some of them may have stood and cheered in the Paris crowd 18 years later as the king climbed the steps to the guillotine.

Q: Another invention associated with TB diagnosis is the stethoscope. How did it come about?

Gerste: A young physician named René-Théophile-Hyacinthe Laënnec had already experienced the importance of diagnosing TB in his student years. His teacher in Paris was Xavier Bichat, considered the founder of histology, who died of TB in [Dr.] Laënnec’s second year at the age of only 30. [Dr.] Laënnec was a devotee of auscultation and made it work with a massively overweight patient by rolling up a sheet of paper, then placing this on the woman’s thorax to listen to her heart sounds. He developed the idea further and built a hollow wooden tube with a metal earpiece. In 1818, he presented the device at the meeting of the Academy of Sciences in Paris; he called it a stethoscope. He used his new instrument primarily to auscultate the lungs of patients with TB and distinguished the sounds of TB cavities from those of other lung diseases such as pneumonia and emphysema.

Q: Back to the present day: The WHO wants to eradicate TB once and for all. What are the hopes and fears in the fight against this disease?

Gerste: There is no doubt that we are currently taking a step backwards in these efforts, and this is not only due to multiresistant pathogens. Especially in poorer countries particularly affected by TB, treatment and screening programs have been disrupted by lockdown measures targeting COVID-19. The WHO suspects that in the first pandemic year, 2020, about half a million additional people may have died from TB because they never received a diagnosis.

Dr. Gerste, born in 1957, is a physician and historian. Dr. Gerste has lived for many years as a correspondent and book author in Washington, D.C., where he writes primarily for the New Journal of Zürich, the FAS, Back Then, the German Medical Journal, and other academic journals.

This article was translated from Coliquio.

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