"In 1937 Beveridge was awarded a Commonwealth Fellowship and went with his first wife, Patricia, and infant son John, to work in the Rockefeller Institute in Princeton, studying swine influenza virus, on which he worked with Richard Shope. They showed that it was serologically identical with the agent that caused the 1918-19 flu pandemic." 
"His research at Cambridge focused on pneumonia in pigs, maternal and neonatal behaviour of pigs, and influenza in horses. His major commitment to international affairs was sparked by his co-operation with Martin Kaplan, the chief of the Veterinary Public Health Unit of the World Health Organisation. Together they developed and edited an international nomenclature and classification of cancers of domestic animals, which occupied the whole of the 1974 and 1976 volumes of the Bulletin of the World Health Organisation.Beveridge was chairman of the World Veterinary Association for 18 years (1957-75) and president at the congresses it held every four years."