- Thoroughly revised text, including new or evolving pathogens and new diagnostic techniques.
- Over 400 new illustrations.
- Maintains the currency of the text, assists the reader in putting new conditions into perspective.
- Updating of the Bibliography on each subject gives readers new entry points into the rapidly expanding literature on each subject.
- Illustrations of new conditions or agents.
- Reader-friendliness improved through highlighting of text, bullet-point lists, italics, diagnostic hints.