Written by his friend, the physician John Baron (1786–1851), this laudatory biography of the 'father of immunology' did much to enhance the reputation of Edward Jenner (1749–1823) upon its publication in two volumes between 1827 and 1838. The work covers Jenner's personal and professional life both before and after his development of the vaccine for smallpox, as well as touching on the vaccine's reception and use around the world. Thoroughly explaining the history and facts of vaccination, Baron established himself as an authority on the subject. Although criticised by some for its unquestioning praise of Jenner's genius, the work is valuable for its use of primary sources, drawing heavily on correspondence and personal notes, excerpts of which appear throughout the text. Volume 1, published in 1827, focuses on Jenner's early life and the history and science of vaccination.