Sir Arnold TheilerKCMG (26 March 1867 – 24 July 1936)[1]Pour le Mérite[1] is considered to be the father of veterinary science in South Africa. He was born in Frick, Canton Aargau, Switzerland. He received his higher education, and later qualified as a veterinarian, in Zurich. In 1891, Theiler travelled to South Africa and at first found employment as a farm worker on Irene Estates near Pretoria, owned by Nellmapius, but later that year started practising as a veterinarian.
His success at producing a vaccine to combat an outbreak of smallpox among the miners of the Witwatersrand brought him an appointment as state veterinarian for the Zuid-Afrikaansche Republiek, in which capacity he served during the Anglo-Boer War of 1899-1902. During this period his research team developed a vaccine against rinderpest, a malignant and contagious disease of cattle. His tremendous energy, pioneering spirit and professional integrity brought him international recognition.
He described in 1919 what is now known as Theiler's disease, a major cause of acute hepatitis in horses.[2] This disease is now known to be caused by a parvovirus.[3]
He married Emma Sophie Jegge (1861–1951) and had two sons and two daughters, the younger two of whom worked at Onderstepoort: Hans (1894–1947), a veterinarian; Margaret (1896–1988), a teacher; Gertrud (1897–1986), a parasitologist and professor; and Max Theiler (1899–1972), a Nobel laureate in 1951 in Physiology and Medicine.
^Theiler A (1919) Acute liver-atrophy and parenchymatous hepatitis in horses. The Fifth and Sixth Reports of the Director of Veterinary Research. Department of Agriculture, Union of South Africa (The Government Printing and Stationery Office, Pretoria, Union of South Africa), pp7–164