Final GI tract

Question 1

Acquired thru the fingers and toes by larval in the soil. Clubbing of fingers and toes seen. Damage by anemia: can be bad enough to drop IQ 10-15 points. Causes damage by biting mucosa

Answer 1

Necator americanus

Question 2

Responsible for typhoid fever Spreads rapidly into circulation to major organs Most Virulent Causes dysentery Intestines surface area decreases

Answer 2

Salmonella typhi

Question 3

DNA virus Leads to cancer acquired by direct contact Has Vacc

Answer 3

Hepatitis B

Question 4

Main cause of stomach ulcers It neutralizes stomach acid Common in blood type O

Answer 4

Helicobacter pylori

Question 4

Has signature smelling diarrhea, leads to antibiotic resistance. Requires long antibiotic treatment Endospore formers

Answer 4

Clostridium difficile “C. diff”

Question 4

Virus seen in pregant women 20% die Acquired by fecal oral route

Answer 4

Hepatitis E

Question 6

2000 Seovars Has many reservoirs- food, pets Causes diarrhea and dysentery Is self limiting if H2O is available.

Answer 6

Salmonella spps

Question 6

Sheeds proglottids Eggs consumed by herbivore Humans infected by eating raw/rare meat Not harmful usually stays localized in intestines.

Answer 6

Taenia saginata

Question 7

Found in shellfish when eaten raw: Scallops, oysters Nausea, diarrhea last few days Usually self limiting

Answer 7

Vibrio parahemolyticus

Question 9

Pathogenic ID50= 100-200 Has toxin causing dysentery- attaches and rearranges the actin in microvilli

Answer 9

Shigella dysenteriae

Question 10

Not very common cause of intestinal problems Gives patient diarrhea Endospores found in the meat. ALSO #1 cause of leg/foot amputations Has necrotic toxin turns skin black

Answer 10

Clostridium perfringens Causes- Disease: Gas gangrene

Question 10

Similar to Rotavirus. Has very low infectious dose (10-20) Causes vomiting, diarrhea

Answer 10

Norwalk or Norovirus

Question 11

RNA Virus: May get from food, water, causes cancer. Cant be cured.

Answer 11

Hepatitis C

Question 13

Pathogenic Handles the Low pH of stomach. Humans are a reservoir.

Answer 13

Shigella Species

Question 15

Found in shell fish Gives the patient Rice stools Exotoxin- activates cAMP, lose 1 litter of water/ hour give chocolate, salt

Answer 15

Vibrio cholera

Question 16

Most common cause of diarrhea from many foods. ID50= 100’s Lives in the small intestine Spirochaete

Answer 16

Campylobacter jejuni

https://youtu.be/lIlQDc-2fk8

Question 17

Defective virus. Dx by capsids Seen in co-infection with Hep B

Answer 17

Hepatitis D

Question 18

Mild diarrhea- usually self limiting Reservoirs- different types of meat. Such as beef, chicken, and even milk products.

Answer 18

Yersinia enterocolitica

Question 19

Virus from food Self limiting, non chronic. Causes jaundice from waste products

Answer 19

Hepatitis A

Question 20

Common on cruise ships, institutions, SNIFFS Fecal oral tranmission Resistant to disinfectants Under age 2 hospitalized for dehydration

Answer 20

Rotavirus