Bacteria as pathogens

Learning Objectives:
Describe the gram stain, shape, and pathogenicity of E. coli, S. aureus, P. aeruginosa, and C. difficile.
Explain how the dose of bacteria can impact the virulence of opportunistic pathogens.
Discuss how changes in the location of bacterial growth on the body can affect the pathogenicity of the bacteria.
Identify various environmental sources of bacteria, including food and healthcare settings.
Summarize Deng et al.'s experiment demonstrating the pathogenicity of C. difficile during dysbiosis..