It is a real race against the clock in which France has launched. The government has made mass screening of the population one of its weapons to fight Covid-19 and prepare for the exit from containment. "We are constantly increasing our testing capacities , " said Olivier Véran, the Minister of Health. There is no question of favoring one technology over another. To achieve this, it relies on molecular tests, whether PCRs, the most widespread to date, or rapid tests, carried out in the patient's bed or in the street, which allow the virus to be detected from nasal swabs.
But not only. To screen a large number of French people, it will also be necessary to rely on serology (blood tests) which makes it possible to detect the presence of antibodies. A way to find out who was infected with Covid-19 and is now immune. Measuring the collective immunity of the population makes it possible to determine the date and the procedures for breaking out of confinement.
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