At least 25 imported cases of the coronavirus have been detected in Spain over the past month, health authorities said on Friday, despite a strict ban on foreign tourism imposed since mid-March. With more than 27,000 deaths and over 238,000 confirmed cases, according to the health ministry, Spain is among Europe’s worst-hit nations, though its rate of infection has slowed substantially. Authorities are closely monitoring for a resurgence in imports ahead of a planned reopening of borders in July.