contact tracing
US /ˈkɑːntækt ˌtreɪsɪŋ/
UK /ˈkɑːntækt ˌtreɪsɪŋ/
1.
the process of identifying people who may have come into contact with an infected person and subsequent collection of further information about these contacts
:
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Public health officials are using contact tracing to control the spread of the virus.
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Effective contact tracing is crucial in managing outbreaks.