From the microscopic observation of infection to the widespread application of molecular techniques in taxonomy and epidemiology, to the genome sequencing of two major species and advances in biochemistry, phylogeny, and water treatment, new information on this fascinating genus continues to mount as we discover and utilize the latest scientific techniques and methods. Greatly revised and expanded to encompass the volume and scope of new material, this second edition of a highly acclaimed reference provides a comprehensive and up-to-date consolidation of data.

Continuing to be the seminal...