I want to know the answer to the following question:
During what time period do some scientist believe the first human could have contracted TB from an ancestor they shared with animals?
All the background I'm provided with is that "A comparison of the genes of M. tuberculosis complex (MTBC) in humans to MTBC in animals suggests humans did not acquire MTBC from animals during animal domestication, as was previously believed.". Is that enough to answer the question?