ROME (Reuters) - Restrictions aimed at slowing a surge in coronavirus cases will be extended in various Italian regions, with both Tuscany and Campania set to be designated as high-risk “red zones”, the health ministry said on Friday.Italy registered a record 40,902 new coronavirus infections over the previous 24 hours, bringing the total since the disease came to light in February to 1.107 million - a threefold increase in barely a month. Looking to limit the spread, the government last week created a three-tier system, with varying degrees of curbs in each area, initially placing four regions in a red zone, two in an orange zone and the rest in a moderate-risk yellow zone. It tweaked the zoning at the start of this week and revised it again on Friday after reviewing the latest data, including local infection rates and hospital occupancy.