Steven L. Percival 
Microbiology and Aging [PDF ebook] 
Clinical Manifestations

Ageing Theories, Diseases and Microorganisms.- Indigenous Microbiota and Association with the Host.- Infections in the Elderly.- Skin Aging and Microbiology.- Lung Infections and Aging.- Influenza in the Elderly.- Changes in Oral Microflora and Host Defences with Advanced Age.- Influence of the Gut Microbiota with Ageing.- A Gut Reaction: Aging Affect Gut-Associated Immunity.- Clostridium and The Ageing Gut.- The Significance of Helicobacter Pylori Acquisition and the Hygiene Hypothesis.- Probiotics and the Ageing Gut.- Microbiological Theory of Autism in Childhood.- Decomposition of Human Remains.