BMS 503 - Foodborne/Waterborne Disease (Exam 4)

Ingestion of contaminated food is a common source of what?

gastrointestinal disease

What food source is the most common cause of foodborne illness?

produce

Foodborne illness can result in great ___ burden

economic

What is food spoilage?

any change in appearance, smell, or taste of a food product that makes it unpalatable to the consumer

What three classes are given to food to determine its susceptibility to microbial spoilage?

perishable, sermiperishable, nonperishable

What does food preservation do?

slows down growth of microbes

What are three examples of food preservation?

refrigeration, heating, drying and dehydration

What are foodborne intoxications?

illnesses in which bacterial toxins are ingested with food (typically enterotoxins)

What are foodborne infections?

illnesses in which microorganisms are ingested with food and colonize gastrointestinal tract

What is listeriosis?

illness caused by ingestion of Listeria monocytogenes that can cause miscarriage, diarrhea, nausea, meningitis, etc

What is Listeria monocytogenes?

gram + coccobacilli found in fresh water or soil reservoir that is ingested and causes flu-like symptoms in adults with worse symptoms in immunocompromised, diagnosed vua gram stain/culture of CSF and treated with antibiotics

What is Staphylococcus aureus?

gram + cocci bacteria that enters via skin contact/inhalation/ingestion that can cause potential disease, diagnosed by isolation of source/gram stain/culture and treated with supportive care

Shedding is common of what bacteria?

S aureus

S aureus intoxicates hosts, meaning it releases _____

toxins (heat resistant, superantigens)

What re the two common sources of waterborne disease transmission?

potable water (drinking and cooking) and recreational water (swimming, etc.)

What is Vibrio cholerae?

gram - rod in natural water reservoir that can cause gastroenteritis, can be fatal if untreated, diagnosed with observation of ricewater stool and serotyping/ELISA, treated with rehydration therapy

What does the cholera toxin do?

causes intestinal cell fluid loss, cell damage and death