Bifidobacterium infantis

Type: Concept

As of November 2026, Bifidobacterium infantis has been mentioned in one podcast episode on Radiolab (Jun 2025). Central to the episode's discussion on gut health and its symbiotic relationship with human milk oligosaccharides (HMOs).

Bifidobacterium longum is a Gram-positive, catalase-negative, rod-shaped bacterium present in the human gastrointestinal tract and one of the 32 species that belong to the genus Bifidobacterium. It is a microaerotolerant anaerobe and considered to be one of the earliest colonizers of the gastrointestinal tract of infants. When grown on general anaerobic medium, B. longum forms white, glossy colonies with a convex shape. B. longum is one of the most common bifidobacteria present in the gastrointe