Smallpox vaccine get to a populated place. The world health system is completely unprepared for this." In the United Kingdom, controversy occurred regarding the company which had been contracted to supply the vaccine. This was because of the political connections of its owner, Paul Drayson, and questions over the choice of vaccine strain. The strain was different from that used in the United States. Plans for mass vaccinations in the United States stalled as the necessity of the inoculation came into question. Smallpox vaccine Smallpox vaccine, the first successful vaccine to be developed, was introduced by Edward Jenner in 1796. He followed
Smallpox the first use of the term "variola"; other historians speculate that Arab armies first carried smallpox from Africa into Southwestern Europe during the 7th and 8th centuries. In the 9th century the Persian physician, Rhazes, provided one of the most definitive descriptions of smallpox and was the first to differentiate smallpox from measles and chickenpox in his "Kitab fi al-jadari wa-al-hasbah" ("The Book of Smallpox and Measles"). During the Middle Ages, smallpox made periodic incursions into Europe but did not become established there until the population increased and population movement became more active during the era of the Crusades. By