More than 4,400 cases have already been confirmed worldwide
officials announced on Tuesday a partial effort to close the city off from travelers from the mainland, including suspending rail and ferry service.
Temperature screening has been rolled out at several airports across the world, but some experts say that might miss some contagious patients, given the varied symptoms of those infected by 2019-nCoV.
Sugrue says the only real way to confirm an 2019-nCoV infection is diagnostic testing like polymerase chain reaction tests or electron microscopy, which may take several hours to complete and would be infeasible in a scenario like an international airport, where tens of thousands of people pass through every day.Sign up to receive the latest health and science news, plus answers to wellness questions and expert tips.
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