单词	contact tracing
释义	contact tracing noun : the practice of identifying, notifying, and monitoring individuals who may have had close contact with a person having a confirmed or probable case of an infectious disease as a means of controlling the spread of infection Health authorities in all these places are working hard to find the original source, or "patient zero," using what's called contact tracing, or finding all the people the patients were in contact with … . In a highly mobile world, that's increasingly difficult. The Salt Lake Tribune In the previous two years, two chancroid cases had been diagnosed in Massachusetts. The outbreak was terminated by intensive surveillance efforts, contact tracing, and antimicrobial treatment of both symptomatic and asymptomatic sex partners. The Journal of the American Medical Association contact tracer noun plural contact tracers And each positive case will require a contact tracer to retrace the patient's steps and track down as many people as possible who they might have come into contact with. Luke DeCock and Adam Wagner Word History First Known Use 1910, in the meaning defined above Medical Definition contact tracing noun : the practice of identifying, notifying, and monitoring individuals who may have had close contact with a person having a confirmed or probable case of an infectious disease as a means of controlling the spread of infection Public health modeling of the spread of COVID-19 has shown that successful contact tracing can reduce the number of infections dramatically, if infected individuals are quarantined, and their contacts and places visited can be identified. Michela Franchini et al., International Journal of Environmental Research and Public Health In the previous two years, two chancroid cases had been diagnosed in Massachusetts. The outbreak was terminated by intensive surveillance efforts, contact tracing, and antimicrobial treatment of both symptomatic and asymptomatic sex partners. The Journal of the American Medical Association
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