01 Jun 2021 --- A study review has revealed the gut microbiota can influence immune responses to vaccinations, suggesting probiotics could be potentially attractive interventions to improve vaccine efficacy. “There is strong evidence from animal models and increasing evidence from clinical studies that this is the case, but further work is needed,” lead author Professor David Lynn tells NutritionInsight. Lynn is an EMBL Australia group leader based at the South Australian Health and Medical Research Institute.