Mechanisms of Bacteria in Causing G.I. Disease/Disorders

Please discuss the mechanisms that Streptococcus mutans, Helicobacter pylori, E. coli and Staphylococcus aureus and Taenia solium utilize to cause disease in the digestive tract. In addition, please list and explain the host immune defenses that microbes would have to overcome to be successful at causing disease. As we have studied, some parasites can cause digestive tract infections and some have the ability to form cysts. Please explain how a cyst may play a role in the ability of the parasite to cause disease. In addition, please explain the difference between excystation and encystation. Also, please discuss the association between normal flora and digestive tract infections, and the role of the port of entry and exit for the microbes to establish successful infections. Include a discussion what roles personal hygiene, quorum sensing and sequential timing play in microbial digestive tract diseases. In addition, please state in your answer the roles of proper food preparation and sanitation play in the decrease of microbial digestive tract infections and the significance of a capsule on particular strains of E. coli that causes digestive tract infection vs. strains of E. coli that cause urinary tract infections.

Minimum of 5 pages for content and response please. We use Cowan’s- “microbiology: a systems approach” textbook for class. Please try to address host factors like PH, salt, oxygen toleration, etc. Thank you!