In the chapter on the microbiota of the human body (chapter 5), we mentioned the possibility that some diseases might be caused by shifts in the microbial population of a site on the human body. For...

In the chapter on the microbiota of the human body (chapter 5), we mentioned the possibility that some diseases might be caused by shifts in the microbial population of a site on the human body. For example, some oral microbiologists have pointed to an association between gingivitis (gum disease) and cardiovascular disease. How would you formulate ‘‘Koch’s postulates’’ for such a disease? Or could you?