First vaccine in the U.S. was introduced by an enslaved African
In 1721, the first vaccine in the U.S. was introduced by an enslaved African named Onesimus who brought…
Variolation was introduced to Great Britain
In 1721, variolation was introduced to Great Britain. In 1840, the British government passed the Vaccination Act that…
The variolation technique was developed
In 1100, the variolation technique was developed, involving the inoculation of children and adults with dried scab material…