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Lingering Pathogenic Illness: An Herbal Handbook is a clinically oriented guide to persistent post-infectious illness, including Long Covid, ME/CFS, and related chronic inflammatory syndromes that don’t resolve with standard care. Written by Dr. Michael Moran, L.Ac., it bridges classical Chinese medicine pattern differentiation with a modern view of immune dysfunction and recovery staging, offering a coherent framework for understanding relapse cycles, mixed deficiency-plus-pathogen presentations, and shifting symptom patterns over time. The book focuses on practical herbal strategy - how to think, choose, and modify formulas - so patients and practitioners can move beyond trial-and-error and toward a structured approach to chronic, lingering illness. Available as a high-quality print edition, as an ePUB for instant download, and as an audiobook on Amazon.