STOP Transmission of Polio (STOP) program. This 2000 photograph depicts a speaker at a rally promoting the next National Immunization Day (NID) in India. The rally was held in front of the District Health Office and included information about where polio immunization clinics would be held, as well as singers and other entertainment. STOP assignments require highly qualified public health professionals. The minimum qualification to be considered for a STOP assignment is at least five years of relevant public health work experience. Relevant experience is defined as having worked (school work/internships not included) in one or more of the following areas of public health: communicable disease surveillance (e.g., acute flaccid paralysis surveillance), field epidemiology (e.g., case outbreak investigations), and immunization programs (e.g., developing, implementing, and monitoring programs). The global effort to eradicate polio is the largest public health initiative in history. The initiative was established in 1988 by the World Health Assembly with the goal of eradicating polio by the year 2000 while strengthening capacity to control other major childhood diseases. Although extraordinary progress has been made to achieve polio eradication by 2000, the initiative was extended to the year 2005. Uttar Pradesh in northern India.