The National Immunization Program of the US Centers for Disease Control provides this professionally-oriented manual, originally used in conjunction with a satellite video conference on the topic. At present, four of the five sections of the manual are available online. The heart of the manual consists of its fourteen disease-related chapters, covering diphtheria, hepatitis, influenza, measles, mumps, and Rubella, among others. There is also a section on surveillance indicators and analysis, as well as one that discusses other relevant aspects of surveillance. Each of the 21 chapters is in .pdf format; ordering information for the print version is available on the main page.