Sos ILA- foodborne illness

Question 1

most common cause of inflammation of small intestine

Answer 1

infectious enteritis (food poisoning)

Question 2

poor hygiene, improper food handling, meat processing and improper cooking causes of what

Answer 2

infectious enteritis

Question 3

main sx’s of food poisoning

Answer 3

diarrhea
vomiting
fever

Question 4

2 pathogens that cause infectious enteritis within hours

Answer 4

S. aureus
C. perfringens

Question 5

onset of sx’s within hours
Enterotoxins bind directly to MHC class II and lead to a massive increase in T cell activation

Answer 5

S. aureus

Question 6

gram + cocci in clusters
catalase +; coagulase +
can cause toxic shock syndrome and scalded skin syndrome

Answer 6

S. aureus

Question 7

onset of sx’s still within hours up to 16
gram + rod
can cause gas gangrene and food poisoning

Answer 7

C. perfringens

Question 8

Enterotoxins bind claudin proteins in the tight junction causing enterocyte apoptosis or oncosis (swelling then necrosis)

Answer 8

C. perfringens pathophys

Question 9

food poisoning sx’s occur within hours to days with what pathogen

Answer 9

C. botulinum
Listeria
Norwalk virus

Question 10

onset of sx’s 12-72 hrs
gram + rod spore former
cleaves SNAP-25 and prevents Ach from being released

Answer 10

C. botulinum

Question 11

can cause floppy baby if they ingest honey

Answer 11

C. botulinum

Question 12

gram + rod
spore forming
cause of pseudomembranous colitis

Answer 12

C. difficile

Question 13

gram + rod
beta hemolytic
catalase +
facultative anaerobe

Answer 13

listeria

Question 14

can get food poisoning from this pathogen from soft cheeses and unwashed produce

Answer 14

Listeria

Question 15

Mediates its own uptake into cells and spreads from cell to cell and secretes factors that alter protein synthesis (facultative anaerobe)

Answer 15

Listeria

Question 16

can cause food poisoning from pathogen in raw produce and shellfish
“winter vomiting disease”

Answer 16

Norwalk virus

Question 17

Virus binds carbs then transmitted across cell membrane into cell

Answer 17

Norwalk virus

Question 18

these pathogens have onset of food poisoning sx’s within days

Answer 18

Rotavirus
Shigella
Salmonella
Campylobacter
V. vulnificus
E. coli

Question 19

can be spread from raw produce;
NSP4 acts as enterotoxin increasing Ca2+ release in the enterocyte and disrupts the tight junctions b/t cells leading to water loss

Answer 19

Rotavirus

Question 20

gram - rod
means of transmission from shellfish or raw produce
facultative anaerobe (similar to E. coli)

Answer 20

Shigella

Question 21

invades M cells and initiates apoptosis in enterocytes

Answer 21

Shigella

Question 22

from raw meat, eggs, milk
gram - rod; does not ferment sugar

Answer 22

Salmonella

Question 23

Invades M cells by being internalized by macrophages; initiates apoptosis in enterocytes

Answer 23

Salmonella

Question 24

means of transmission meat and poultry (contamination through processing of animal feces)
penetrates apical membrane causing cellular damage

Answer 24

Campylobacter

Question 25

raw oysters
produces hemolytic toxins
curved rod

Answer 25

V. vulnificus

Question 26

Patients with hemochromatosis are highly susceptible !!!!!! Dependent on availability of iron for growth

Answer 26

V. vulnificus

Question 27

O157: H7 (shiga-like toxin)
beef contamination; toxin mediated cell damage leads to thrombosis in microvasculature in organs like kidneys

Answer 27

E. coli

Question 28

gram - rod; lactose fermenter
can cause HUS

Answer 28

E. coli

Question 29

triad: (also has bloody diarrhea)
microangiopathic hemolytic anemia
thrombocytopenia
renal insufficiency

Answer 29

hemolytic uremic syndrome (HUS) from E. coli

Question 30

these pathogens have food poisoning sx’s occurring within weeks

Answer 30

Giardia
Hep A

Question 31

1-2 weeks onset of sx’s
raw produce
from animal feces in water source
most common protozoal infection worldwide

Answer 31

Giardia

Question 32

3-4 weeks onset of sx’s
raw produce and shellfish
acute (attack on liver)
body’s immune system will clear this

Answer 32

Hep A