Source: South China Morning PostA US biotech firm trying to figure out why coronavirus vaccines work better for some people than others is searching for clues in an unlikely place: faeces.Persephone Biosciences based in San Diego is recruiting volunteers for a 250-person study that will look for links between vaccine efficacy and the microbiome: the diverse and dazzling community of bacteria that live inside your intestines.There is good precedent for such a study. In 2019, Stanford scientists reported that healthy volunteers…Read More