“Microbiome in Health and Disease: From Diagnostics and Host-Microbe Interactions to Therapeutic Modulation Across Human and Veterinary Medicine” brings together core concepts and current thinking in its subject in depth, the work of Dr. S. Thiruppathi Raja. Concepts are developed step by step and supported by clear explanations and illustrative examples throughout. Aimed at students, researchers, and academic readers, it is published by Khushbu Publications, New Delhi, India, and released in 2026.