Cowpox to the mild form of smallpox and the observation that dairy farmers were immune from smallpox inspired the first smallpox vaccine, created and administered by English physician Edward Jenner. The word “vaccination,” coined by Jenner in 1796, is derived from the Latin root "vaccinus", meaning of or from the cow. Once vaccinated, a patient develops antibodies that make them immune to cowpox, but they also develop immunity to the smallpox virus, or "Variola virus". The cowpox vaccinations and later incarnations proved so successful that in 1980, the World Health Organization announced that smallpox was the first disease to be eradicated
History of smallpox in Mexico in Mexico) in which he included an introduction about what is smallpox and instructions to treat it, such as drinking warm water with salt and honey, gargling with water and vinegar, keep tidy and clean and finish treatment by taking a purgative. He thought that smallpox was a remedy of nature to clear bad mood and doctors should not accelerate the process of healing because it was against nature. He wrote a letter to propose his measures as a strategy to combat smallpox in which he also included recommendations like purify air with gunpowder and scent, ventilate churches where bodies