title: ['Lelystad agent'--the cause of abortus blauw (mystery swine disease)].
abstract: An unidentified agent was isolated from samples of pigs affected with abortus blauw (also known as mystery swine disease). This agent, designated 'Lelystad agent', grows in cultures of pig lung macrophages. The agent was inoculated into eight pregnant sows which subsequently aborted or gave birth to weak or dead piglets. The agent was then isolated from these piglets, thus confirming that it is the causal agent of abortus blauw.
authors.affiliation: Centraal Diergeneeskundig Instituut, Vestiging Virologie (CDI-DLO), Lelystad.
authors.forename: G
authors.initials: G
authors.lastname: Wensvoort
authors.forename: C
authors.initials: C
authors.lastname: Terpstra
authors.forename: J M
authors.initials: JM
authors.lastname: Pol
mesh_terms: D000034:Abortion, Veterinary / Q000382:microbiology*; D000818:Animals; D005260:Female; D007158:Immunologic Techniques; D008828:Microbiological Techniques; D011247:Pregnancy; D013552:Swine; D013553:Swine Diseases / Q000382:microbiology*
vernacular_title: 'Lelystad agens' de verwekker van abortus blauw.