The National Botulism Surveillance System compiles information on botulism cases that occur in the United States. The CDC provides clinical, epidemiological, and laboratory consultation and testing services for suspected botulism cases 24 hours a day and is the only source for antitoxin in the United States. CDC alerts other federal agencies concerning botulism outbreaks associated with commercially produced and distributed food products. Also, the CDC conducts a yearly survey of state and territorial epidemiologists and of state public health laboratory directors to identify and compile all botulism cases that occurred in the previous year.