Once Edward Jenner developed the smallpox vaccine, it spread from England, where he lived, to other parts of the world. Meanwhile, events were unfolding that led the Spanish Empire to launch a huge expedition to take the vaccine to its colonies. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com
Once Edward Jenner developed the smallpox vaccine, it spread from England, where he lived, to other parts of the world. Meanwhile, events were unfolding that led the Spanish Empire to launch a huge expedition to take the vaccine to its colonies. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com
