Professor Diallo was a veterinarian before immigrating from Senegal to Manitoba in 1984. He is the first sub-Saharan African francophone to arrive in Winnipeg. Since then, he has been an active member of the francophone community and far beyond, especially at the Université de Saint-Boniface as a Professor of microbiology, zoology and physiology, among others.
He has also been the President of la Société de la francophonie manitobaine and an active member of several organizations, such as the Manitoba Immigration Council, Francofonds, Abri Marguerite, Advisory Committee of the Canadian Museum of Human rights, post-censual survey on official language minorities (Statistics Canada). He has been a board member of several organizations not only in Manitoba, but also in Ottawa (FFA, CLÉ), among others.
He was one of the founding members of l’Amicale de la francophonie manitobaine and also Les Amis du Carré civique for the preservation of Saint-Boniface’s historic heritage buildings.
He has been recognized over the years for his community involvement: Professor emeritus (Acfas), Ordre des francophones d’Amérique, Compagnie des Cent-Associés francophones, the Queen Elizabeth II Diamond Jubilee Medal and very recently was among the Honorary Consuls of Winnipeg who received the Queen Elizabeth II Platinum Jubilee Medal on 26 September 2022.