Topic
Tuberculosis was long known through wasting, coughing, blood, exhaustion, and death. Before it became a bacteriological disease, it was described as consumption, shaped by poverty, crowded housing, industrial cities, family care, climate therapy, and cultural meanings of decline.
The history of tuberculosis links social medicine and laboratory medicine: Robert Koch's identification of the tubercle bacillus changed explanation, but treatment and prevention still depended on housing, institutions, public-health systems, and later antibiotics.
Bacteriology
Tuberculosis had many meanings before bacteriology: hereditary weakness, romantic consumption, urban disease, household tragedy, and social problem. Bacteriology changed its cause without erasing those social conditions.
Robert Koch identified the tubercle bacillus in 1882, strengthening the specific-disease model described in Germ Theory and the Remaking of Medicine.
Tuberculosis also belongs to the history of institutions. Sanatoria, dispensaries, hospitals, X-ray screening, antibiotic treatment, and public health reporting made TB a problem of systems as much as microbes.
Consumption
Nineteenth-century culture sometimes romanticized consumption as a slow, sensitive decline, but that image concealed unequal exposure and survival. Crowded rooms, poorly ventilated workplaces, undernutrition, insecure income, and limited access to care helped tuberculosis spread and made recovery less likely. Women often carried the work of nursing infectious relatives at home; migrants, prisoners, industrial workers, and impoverished families could face both heightened risk and moral blame.
Falling mortality in some cities began before effective antibiotics. Better nutrition and housing, smaller households, occupational reform, isolation of infectious cases, and changing exposure all contributed, though unevenly. This does not make the bacillus less causal. It shows why a biological cause does not by itself determine who becomes ill or who receives a chance to heal.
Institutions
Before antibiotics, sanatoria prescribed fresh air, food, rest, and tightly ordered routines; some patients underwent collapse therapies or surgery. Removing an infectious person from a crowded home could reduce household transmission, but admission, comfort, duration, and freedom differed sharply by class, race, gender, and locality.
Public-health workers combined diagnosis with home visits, sputum testing, education, contact investigation, reporting, and material assistance. Chest radiography later supported screening, linking TB to the history of radiology. These systems could make care accessible while also subjecting families to surveillance and compulsory rules.
Bacille Calmette-Guérin vaccination began in the 1920s and was adopted differently across countries because disease patterns, policies, and estimates of protection differed. Its history cautions against treating a technology's existence as proof of uniform use or impact.
Antibiotic Era
Streptomycin offered the first antibiotic active against tuberculosis in the 1940s. A landmark British trial reported in 1948 used randomized allocation to compare treatment, connecting TB to the history of clinical trials. Improvement could be dramatic, but streptomycin alone selected resistant bacilli. Combining drugs made durable cure more likely and helped move care from long institutional stays toward outpatient treatment.
Antibiotics did not end tuberculosis. Long courses, toxic effects, interrupted supply, weak health systems, stigma, poverty, and later the HIV epidemic sustained transmission and complicated care. Incorrect or incomplete regimens helped drug-resistant strains emerge. The history of antibiotics therefore includes stewardship, reliable access, and patient support as well as discovery. TB remains a test of whether laboratory diagnosis, effective medicines, public health, and social protection can work as one system.