Science

Why France’s testing policy remains ineffective

This is one of the main reasons for the failure of the test-trace-isolate strategy: the delay between the onset of symptoms and the result of a test. Today, it already takes three days on average between the first signs (cough, fever …) and the performance of a PCR test. And then the lab rendering still takes far too long: in half of the cases, it still takes more than 24 hours – and sometimes even more than 72 hours. “What matters to succeed in breaking the chains of transmission is the speed with which sick people and their contacts can be identified and isolated. Today, everything is still far too long”, deplores Professor Eric Caumes, head of the infectious and tropical diseases department at La Pitié-Salpêtrière hospital.

READ ALSO >> Covid-19: The puzzle of forced isolation

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