What part of the world did tuberculosis come from? Did it spread from animals to humans? If so, during what time period?
Respiratory Diseases - 1 Answers
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Human tuberculosis is a very ancient disease, said Cristina Gutierrez of the Pasteur Institute, referred to in the Old Testament and found in Egyptian and Peruvian mummies. The bacterium Mycobacterium tuberculosis, the causative bacterium, has been found only in humans. The disease spreads directly between people through the air. The rare tuberculosis-causing bacteria that grow in smooth cultures are genetically very distinct from one another and from the classic tuberculosis cluster, and probably derive from a common "prototuberculosis" species that arose about three million years ago. That is assuming you believe in carbon dating .
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