Agricultural Research Service scientists have developed an experimental vaccine that protects cattle from the bacterium that causes Johne’s disease. The chronic intestinal disorder is most prevalent in dairy herds and costs the U.S. industry more than $220 million in losses each year.
Source: Morning Ag Clips, June 28, 2021. Link. Trials with dairy calves, detailed in the April 2021 issue of the journal Vaccine, indicate the vaccine cocktail did not disappoint. In addition to rendering the young animals immune to the disease over the course of a year of monitoring, the formulation showed little to no cross-reactivity with other serological tests for both Johne’s disease and bovine tuberculosis.”