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2. Contact tracing—where do we go from here?
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5. Layne N. “It’s just impossible”: tracing contacts takes backseat as virus spreads. Reuters 31 Mar 2020. https://www.reuters.com/article/us-health-coronavirus-usa-tracing/its-just-impossible-tracing-contacts-takes-backseat-as-virus-spreads-idUSKBN21I324