Slave Onesimus Invented Vaccine That Saved The World

Pharmaceutical companies around the world have made and continue to make billions of dollars from the manufacture and sale of vaccines. Little is know that the first vaccine was created by an African slave called Onesimus who was enslaved in Africa and taken to Boston United States. Click link to see video of this story: https://www.youtube.com/watch?v=C98Zz__PTxs