Shaker foal syndrome (SFS) is a highly fatal toxicoinfectious form of botulism occurring most often in horses 2 to 8 weeks of age. Clinically SFS is an acute neuromuscular paralytic disease having an incidence among thoroughbred foals in the area around Lexington, Kentucky of 25-30 cases per year. Clostridium botulinum, type B, has been isolated repeatedly from the feces of affected foals and the symptoms of SFS have been reproduced ...