MICR 121 Lecture Notes - Lecture 18: Salmonella Enterica Subsp. Enterica, Gastroenteritis, Abdominal Pain

• School: Queen's University
• Department: Microbiology and Immunology
• Course: MICR 121
• Professor: Prameet Sheth

Document Summary

Micr120 lecture 18: bacteria, parasites, and toxin; mediated gastroenteritis. Rules for avoiding enteric pathogens: cook it, boil it, peel it or forget it! Microlingo: acute gastroenteritis: diarrheal disease of rapid onset, w or w/out symptoms of nausea, vomiting, fever, or abdominal pain, diarrhea: frequent passage of unformed liquid stools (>3+ loose watery stools per day). Acute: <14 days; chronic: > 14 days: dysentery: blood or mucous in stool. Bacterial enteric pathogens: most common cause of illness in children and adults, majority of infections acquired through fecal-oral route, but ingested of contaminated food and water. Cause: inflammation of the gi tract due to bacteria. Symptoms: abdominal pain, bloody stool (sometimes), loss of appetite, nausea and vomiting: blood stool associated with mucosal invasion of the bacteria, watery stool no mucosal invasion. Typically associated with bbq season, so almost opposite to viral gastroenteritis season. Common pathogens: salmonella, campylobacter, bivrio, shigella, e. coli, c. perfringens, c. difficile.