Vaccine Interactions With the Infant Microbiome: Do They Define Health and Disease?

Area of Science:

• Immunology
• Microbiology
• Vaccinology

Background:

• Growing awareness of the microbiome's role in immune system function.
• Emerging evidence links microbiome composition to vaccine-specific immune responses.
• Probiotics are being explored to enhance vaccine efficacy.

Purpose of the Study:

• To review studies on altering the neonatal gut microbiome to improve vaccine responses.
• To identify knowledge gaps and unknown mechanisms of microbiome-immunity interactions.
• To discuss research strategies for developing therapeutic interventions.

Main Methods:

• Review of recent scientific literature on microbiome manipulation and vaccine responses in neonates.
• Analysis of studies investigating the impact of probiotics and other interventions.
• Identification of current research gaps and proposed future research directions.

Main Results:

• Inconsistent early results regarding the effectiveness of probiotics in boosting vaccine-specific immunity.
• Lack of precise understanding of which microbiome aspects impact immunity.
• Mechanisms of action by which the microbiome influences immune responses remain largely unknown.

Conclusions:

• Further investigation is crucial to understand the microbiome's role in immune responses and vaccine efficacy.
• Targeted microbiome modulation holds potential for enhancing infant vaccine responses.
• Developing effective therapeutic strategies requires filling current knowledge gaps.