Spero Therapeutics(SPRO) stock is getting a boost from U.S. Food and Drug Administration (FDA) news. That includes positive feedback for its complicated urinary tract infection (cUTI) treatment. The company is now planning an additional Phase 3 clinical trial of tebipenem HBr. Source: ShutterstockSpero Therapeutics(NASDAQ:SPRO) stock is climbing higher on Wednesdaythanks to positive feedbackfrom the U.S. Food and Drug Administration (FDA).The news concerns plans for the company to resubmit tebipenem HBr for the treatment of complicated urinary tract infection (cUTI). During a Type A meeting, the FDA said “positive results from an additional Phase 3 trial […] could be sufficient to support the approval of tebipenem HBr for cUTI.”It’s worth noting that Spero has already conducted a Phase 3 c