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Contact tracing is a key tool to stopping the coronavirus pandemic. Teams of medical detectives notify people when theyu2019ve been exposed to COVID-19. This can help each person avoid passing the virus on to an additional set of contacts. This slows down the rate of transmission. <br><br>In an analysis of the San Francisco tracing program, researchers found that contact tracing prevented 44% of transmissions from April through June 2020. Without this tool in place, the number of nationwide COVID-19 cases would have been higher. <br><br>However, thereu2019s a key issue that can thwart this necessary medical interventionu2014caller IDs displaying unknown numbers. <br><br>Below, letu2019s look at the data about how many calls from contact tracers go unanswered and why contact tracing has become so difficult.<br><br>https://www.peoplefinders.com/blog/contact-tracing-versus-unknown-phone-numbers/
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