Related Experiment Video
Updated: Aug 30, 2026

Application of Long-term cultured Interferon-γ Enzyme-linked Immunospot Assay for Assessing Effector and Memory T Cell Responses in Cattle
Published on: July 11, 2015
The seroprevalence of Johne's disease in Georgia beef and dairy cull cattle
Mel Pence1, Charles Baldwin, C Carter Black
1Veterinary Diagnostic and Investigational Laboratory, The University of Georgia, Tifton, GA 31793, USA.
Abstract:
Beef and dairy cattle serum samples, collected during 2000 at sale barns throughout Georgia, were obtained from the Georgia State Brucellosis Laboratory and were used to conduct a retrospective epidemiological study. Statistical samplings of 5,307 sera, from over 200,000 sera, were tested for antibodies to Mycobacterium avium ssp. paratuberculosis, (Johne's disease) using a commercial enzyme-linked immunosorbent assay test kit. An overall period seroprevalence in all classes of cattle tested was 4.73%. The period seroprevalence in dairy cattle was 9.58%, in beef cattle it was 3.95%, and in cattle of unknown breed it was 4.72%. It was concluded that the seroprevalence of Johne's disease in cull beef and dairy cattle in Georgia is economically significant.
Related Concept Videos
Bacterial Gastroenteritis
Toxoplasmosis
Investigation of Disease Outbreaks
Infectious Diseases and Their Occurrence
Principles of Disease Surveillance
Cytomegalovirus Disease

