HP and infection: The fecal samples analyzed here were previously collected during a randomized, double-blind, controlled trial in subjects presenting infection with Helicobacter pylori (Hp) who underwent a 14-d Hp eradication therapy with or without consumption of a multi-strain probiotic intervention.24Hp eradication therapy consisted of a course of two antibiotics, amoxicillin (beta-lactam) and clarithromycin (macrolide), and a proton pump inhibitor (PPI, pantoprazole).