For surveillance data, undercount is best defined as: (a) Cases recorded by local health department, but not referred onto the national surveillance system (b) Cases not reported by a laboratory (c)...

For surveillance data, undercount is best defined as:

(a) Cases recorded by local health department, but not referred onto the national surveillance system

(b) Cases not reported by a laboratory

(c) The ratio of cases occurring in the community to cases reported to surveillance system

(d) People who are infected but asymptomatic

(e) All of the above