The document discusses surveillance for acute flaccid paralysis (AFP). It defines AFP as the sudden onset of weakness or paralysis of a limb over 15 days in patients under 15 years old. Surveillance involves collecting, analyzing, interpreting, and distributing data to take necessary action. AFP surveillance aims to detect polio transmission and interrupt its spread by identifying all potential reservoirs of the virus. The goal is to show that no AFP cases were caused by polio virus, proving it is no longer present. The AFP Surveillance System involves hospitals, clinics, community investigation of non-polio and polio AFP cases.