AFP and poliomyelitis: Detection of ≥2 NPAFP cases per 100,000 persons aged <15 years is considered sufficiently sensitive surveillance to detect a case of polio; to assess quality of case investigation, 80% of AFP cases should have adequate stool specimens collected.¶ The polio surveillance network includes approximately 800 AFP focal points; 2,500 health facilities; and 35,000 reporting community volunteers.