Bacterial Digestive Pathogens 11.28.2022. IS Questions

Question 1

What is dysentery?

Answer 1

a serious form of diarrhea characterized by blood, pus, and mucus in the feces

Question 2

When copious watery diarrhea is seen, it indicates an infection of what?

Answer 2

infection of the small intestine

Question 3

When diarrhea with pus or mucous is seen it indicated an infection of what?

Answer 3

large intestine

Question 4

What causes enteric fever?

Answer 4

Salmonella serotype Typhi (typhoid fever)

Salmonella serotype Paratyphi (paratyphoid fever)

Question 5

Name two general mechanisms of pathogenesis of intestinal pathogens (3)

Answer 5

• alteration in intestinal epithelial cells
• cell invasion
• exotoxin production

attachment
enterotoxin/cytotoxin production
cell invasion
destruction of microvilli

Question 6

Name four prevention strategies for avoiding diarrheal pathogens

Answer 6

sewage treatment, handwashing, chlorinating drinking water, PulseNet.

Question 7

Name two causative agents of diarrheal illnesses

Answer 7

Rotaviruses
Noroviruses

Question 8

How would you primarily treat a bacterial diarrheal illness?

Answer 8

oral rehydration therapy (ORT). replacing fluids and electrolytes that are lost due to diarrheal disease.

Question 9

what is PulseNet?

Answer 9

prevention strategy against diarrheal pathogens.

PulseNet = DNA subtyping resource which helps track illness caused by specific intestinal pathogens to detect foodborne outbreaks