追つい跡せき調ちょう査さ

noun, noun or participle which takes 'suru', transitive verb

follow-up survey; tracing survey

General term for a survey or investigation that tracks subjects over time, such as in market research, social studies, or after an event.

• 卒そつ業ぎょう生せいを対たい象しょうに追つい跡せき調ちょう査さを行おこなった。

  We conducted a follow-up survey targeting graduates.

• この研けん究きゅうでは、患かん者じゃの回かい復ふく状じょう況きょうを追つい跡せき調ちょう査さしている。

  In this study, we are tracking the recovery status of patients.

noun, noun or participle which takes 'suru', transitive verb

contact tracing (of an infectious disease)

Specifically used in public health contexts for identifying and monitoring people who have been in contact with an infected person.

• 保ほ健けん所じょは感かん染せん者しゃと接せっ触しょくした人ひとを追つい跡せき調ちょう査さしている。

  The public health center is conducting contact tracing of people who had contact with the infected person.