Marivi Geijo works in the Animal Health Department of NEIKER since 1999. She graduated in veterinary medicine at the University of León (1999) and obtained her PhD at the same university (2007) with the work Study of immunological and bacteriological variables in relation to immunisation against paratuberculosis in ruminants. Her activity focuses on the diagnosis of animal diseases by immunological, bacteriological and molecular methods, especially transmissible spongiform encephalopathies and animal mycobacteriosis. She is in charge of the NEIKER-Derio animal facilities and is secretary of the NEIKER Animal Welfare Body and Animal Facility Evaluation Committee.