All school systems except Alamo, Huntingdon, Jackson County, McNairy County, and Polk County submitted salary schedules for the 2014-2015 school year. Those systems that did not submit a salary schedule this year, we posted the most recently received schedule from a previous year.
What Is Mad Cow Disease and Variant Creutzfeldt-Jakob Disease? Mad cow disease is an infectious disease caused by prions that affect the brains of cattle. The actual name of the disease is bovine spongiform encephalopathy (BSE), a name that refers to the changes seen in brain tissue of affected cows.
Caused by a deformed protein known as a prion, the disease attacks and destroys the brain and spinal cord in cattle. 10 Shocking Facts About Mad Cow Disease April 24, 2012. Onset is typically during middle age, which is characteristic of the long incubation periods most prion diseases show.