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'Needle in a haystack': Reborn tech offices may need distance and mass testing
Companies are considering a variety of testing and tracing systems, but creating these plans will be a balancing act that requires answering thorny questions about effectiveness, privacy, price and access.

Keith Whiteing has his nasal passage swabbed while being tested for coronavirus in Woodbridge, Virginia. Testing and tracing may be a facet of many companies' plans to reopen offices and factories.
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