The French government warned Friday of increased police checks to enforce travel restrictions in place in Paris and several other regions as coronavirus cases continue to soar around the country. French President Emmanuel Macron has come under fire for going against the advice of scientific experts and his health minister at the end of January, when he decided not to impose a national lockdown. The number of new coronavirus cases in children under 15 has accelerated sharply over the past week, the Sante Publique France health authority said Friday. "The British variant... is not more contagious for children, but it is as contagious for children as for adults," the agency's respiratory infections chief Daniel Levy-Bruhl said. But more than 400,000 doses were administered on Friday alone, Health Minister Olivier Veran tweeted, and the government has vowed to open dozens of mass vaccination "supersites" in April.