Britain said the measure - which also applies to people travelling from Monaco, Malta, Turks and Caicos, and Aruba - would kick in from 4am on Saturday.
Since its launch, 68 people have informed the platform they had been infected and only 14 users were alerted that they were now at risk because of their contacts with these people, digital affairs minister Cedric O said.
Consortium led by Air Liquide will help boost production of critical medical kit as President Emmanuel Macron promises to ramp up production of critical medical equipment to treat coronavirus.
There are now 29,155 confirmed cases of Covid-19 in the nation, compared to 25,233 a day ago and 13,904 people hospitalised of whom 3,375 are in intensive care.
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