Table 1.

The definition of AFP case for zero case daily reporting and retrospective searching

AFP surveillance	Areas	Hospitals	AFP case definition
Zero case daily reporting	Southern Xinjiang and Urumqi	Hospitals at township level and above	AFP cases at any age
	Other prefectures	Hospitals at county level and above	AFP case <15 years or suspected polio cases at any age
Retrospective searching	Southern Xinjiang and Urumqi	Hospitals at township level and above	AFP case <15 years old, suspected polio case at any age in 2010; AFP case at any age, paralyzed from January 1 to August 28, 2011
	Other prefectures	Hospitals at county level and above	AFP case <15 years old, or suspected polio case at any age, paralyzed from January 1, 2010 to August 28, 2011

Note: AFP acute flaccid paralysis.