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"Vaccines 2011" icon

Vaccines 2011

Historically, the notion of immunizing humans against infections actually preceded the development of the germ theory and the discovery of the first scientific vaccine (against smallpox) in the year 1796 by Edward Jenner. Various peoples of Africa and Asia knew that infected material from an ill person could be used to protect a healthy person from the same disease, even though they had no scientific understanding of the process. Variolation, the deliberate inoculation of smallpox lesional material into the skin of a healthy person, was widely practiced before Jenner. And although the practice was potentially dangerous, it was also effective in preventing the disease. A lot of progress has been made in the two centuries since vaccination has been introduced into mainstream medicine. Modern... Show More
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