Bath, Gareth F.World Association for the History of Veterinary Medicine. International Congress (44th : 2020 : Pretoria, South Africa)2020-05-042020-05-042020-02http://hdl.handle.net/2263/74463Presentation delivered at the 44th International Congress of the World Association for the History of Veterinary Medicine held from the 27-29 of February 2020 at The Farm Inn Hotel and Conference Centre, Pretoria, South AfricaVeterinarians trained in Europe dominated the research fraternity in South Africa up to the Second World War and scientific knowledge and investigations were therefore based on what was known in Europe or other countries with long veterinary traditions. When faced with the many baffling, unknown diseases of Africa, early investigators trained in Europe floundered. Jaundice in sheep was encountered in many different circumstances and could be accompanied by other signs, notably photosensitisation. Confusion resulted, not helped by the many observations and opinions of farmers, who had given the condition the name of ‘geeldikkop’ or yellow swelled head. As Theiler noted, farmers were great observers but poor analysts of their observations. (read full abstract in the WAHVM 2020 proceedings https://repository.up.ac.za/handle/2263/74425)26 slides : colour and black & white photosPDFen©2020 World Association for the History of Veterinary Medicine. Provided for educational purposes only. It may not be downloaded, reproduced or distributed in any format without written permission of the Association and individual authorsVeterinary medicine -- HistorySheep -- DiseasesGeeldikkop diseaseSheep -- JaundiceEnzootic IcterusEvent