Tubersculosis

Image of seals from www.fanpop.com/clubs/the-animal-kingdom/images/14060694/title/seal-wall… Paleogeneticist Dr. Johannes Krause (University of Tübingen, Germany) and colleagues were interested in the origin of tuberculosis (TB) in the Americas. Since strains of TB found in the Americas are related to strains found in Europe, prior theories held that Spaniards may have introduced it to the Americas while colonizing South America.  The problem with those theories is that pre-Columbian skeletal remains showed signs of TB much earlier. Dr. Krause was quoted in Scientific American, “Pathogens…