* Alba suffering lingering effects of flu * Recovering Sanchez included in the squad (Recasts with Barca statement) BARCELONA, Sept 18 (Reuters) - Barcelona fullback Jordi Alba has recovered from flu but is still not fit enough to feature in Wednesday's Champions League Group G game at home to Spartak Moscow, the La Liga club said on Tuesday. There was better news for coach Tito Vilanova on Alexis Sanchez, who missed Barca's 4-win at Getafe on Sunday after returning from international duty with Chile with a minor leg muscle tear. ... More...