lecture 8 Flashcards
Main route and site of infection for foodborne pathogens
Oral
Intestines
Food poisoning vs foodborne infection
- Toxins produced by fungi. Non infectious toxins
2. Microorganisms present in food
First symptoms of food borne infection
Nausea diarrhea and abdominal cramps
Primary vehicle of transmission of food borne infections
Water or food
Most important pathogen of GI infections is
Enterobacteria
Listeria monocytogenes outbreak linked to
Found in
Caramel apples
In the environment
Listeria can develop to a serious illness called
Meningitis encephalitis
Meningitis encephalitis has the highest risk of developing in
Pregnant the elderly and the immunosuppressed
What type of organism is enterobacteria
Is it motile?
Gram negative
All motile except for shigella and klebsiella
Antigens structure of enterobacteria
K capsular
H flagella
O somatic
What does e.coli do to cells?
It does not invade mucosal cells! But it produces shiga toxin or veratoxin
Symptoms of E. coli
Abdominal pain, initially watery but then bloody diarrhea
E.coli can lead to HUS
Term
What is it
Hemolytic uremic syndrome
When E. coli ends up in circulation because of the inflamed bowel wall, produced shiga like toxin SLT
Depending on ____ these salmonella bacteria can cause
3
Salmonellosis gastroenteritis by diff spp
Paratyphoid fever by s. Parathyphi
Typhoid fever by s. Typhoon
Campylobacter jejuni shape
How long does illness last
Curved or spiral
1 week
