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
1978 smallpox outbreak in the United Kingdom August, but her case was described as "very minor" and she was subsequently declared free from infection and was discharged from hospital on 22 September. Many people had close contact with Parker before she was admitted to hospital. The outbreak resulted in 260 people being immediately quarantined, several of them at Catherine-de-Barnes Hospital, including the ambulance driver who transported Mrs Parker. Over 500 people who had been (or had possibly been) in contact with Parker were given vaccinations against smallpox. On 26 August, health officials went to Parker's house in Burford Park Road, Kings Norton, and fumigated her home and