Unlike the Europeans, the Native Americans had no acquired immunity, and as smallpox spread into other areas and infected other tribes, it killed between 400,000--500,000 (possibly up to 1.5 million) Native Americans.
As smallpox spread into other areas and infected other tribes, it killed between 400,000--500,000 (possibly up to 1.5 million) Native Americans. Unlike the Europeans, the Native Americans had no acquired immunity to the new disease.
Unlike the Europeans, the Native Americans had no acquired immunity to the new disease. As smallpox spread into other areas and infected other tribes, it killed between 400,000--500,000 (possibly up to 1.5 million) Native Americans.
Unlike the Europeans, the Native Americans had no acquired immunity to the new disease. As smallpox spread into other areas and infected other tribes, it killed between 400,000--500,000 (possibly up to 1.5 million) Native Americans.