Infection of the intestinal tract with worms of the genus oesophagostomum. This condition occurs mainly in animals other than humans. The disease is oesophagostomiasis (MONDO_0005880, a Monarch Disease Ontology term). Also known as: Oesophagostomum caused disease or disorder, Oesophagostomum disease or disorder, Oesophagostomum infectious disease, infection by Oesophagostomum.