FRANKFURT – The head of the European Central Bank says the economic recovery from the coronavirus pandemic “risks losing momentum” due to a second wave of infections and that more stimulus could be added if necessary. “The second wave of the pandemic in Europe, notably in France, and the resulting new restrictions are adding to the uncertainty and weighing on the recovery,” Christine Lagarde said in an interview with the French newspaper Le Monde that was published on the central bank's website.“Since the rebound we saw over the summer, the recovery has been uneven, uncertain and incomplete and now risks losing momentum,” she said, adding that “the options in our toolbox have not been exhausted.