The name says it all. Maintained by David Sander, congressional aide and former graduate student at Tulane University. From the University of Texas, Houston Medical Center. Incomplete, but the section on basic microbiology is complete. Provides a brief overview of major concepts, techniques and tests, bacterial groups.
Some areas are more complete than others.
A collection of interesting stories about recent microbiological events. Written by John C. Brown at the University of Kansas. Includes a glossary and animated maps showing the spread of a particular disease over time. A nice feature is that you can choose a country and this site will display a list of common parasites for that country with infection and mortality rates. Collection of micrographs, drawings, and movies.