Edward Jenner (born in 1749 in Berkeley, UK) is often called the "father of immunology" for his ground-breaking work with vaccines. In the 1700s when cases of smallpox were breaking out all around him, Jenner noticed the milkmaids on his rural farm were not contracting the disease. With this information, he scraped the sick cow pus onto the skin of his family members, who them miraculously did not contract smallpox. He was ostracized for this act, with people viewing his form of immunization as disgusting and wrong. Jenner called his new procedure "vaccination" after the virus closely related to cowpox, "vaccinia," and his smallpox vaccine became the world's first vaccine. Learn more in the following video.