Eukaryotic Microbes: Protozoa (Giardia)

Question 1

general information: giardiasis
______ pathogen
_____ infectious dose
_______ in the environment
_______ resevoirs

Answer 1

intestinal pathogen
low infectious dose
survives in environment
animal resevoirs

Question 2

what form is the giardiasis trophozoite?

Answer 2

growing, feeding form

Question 3

what form is the giardiasis cyst?

Answer 3

dormant, survival form

Question 4

what is the growing form of giardiasis?

Answer 4

trophozoite

Question 5

what is the feeding form of giardiasis?

Answer 5

trophozoite

Question 6

what is the dormant form of giardiasis?

Answer 6

cyst

Question 7

what is the survival form of giardiasis?

Answer 7

cyst

Question 8

what are the two forms of Giardiasis?

Answer 8

trophozoite, cyst

Question 9

which giardiasis form is found in the small intestine?

Answer 9

trophozoite

Question 10

where is the trophozoite found?

Answer 10

small intestine

Question 11

good or bad at surviving in the environment: trophozoite form

Answer 11

bad, aka not the infectious form

Question 12

what is the infectious form of Giardia lamblia

Answer 12

cyst

Question 13

where is the cyst form formed?

Answer 13

formed as parasite slowly passes out of GI tract

Question 14

what is the infectious dose of Giardiasis ?

Answer 14

10-100 cysts

Question 15

good or bad at surviving in the environment: cyst form

Answer 15

good

Question 16

formed as parasite slowly passes out of GI tract

Answer 16

cyst

Question 17

PCII form of pathogenesis for giardiasis

Answer 17

colonization of mucous membrane

Question 18

where does Giardia lamblia adhere to?

Answer 18

small intestine

Question 19

symptoms of Giardia

Answer 19

fatty, greasy stool
lactose intolerance

MILD: indigestion, gas, nausea
SEVERE: vomiting, diarrhea, cramps, weight loss

Question 20

who is more likely to transit giardiasis: diarrhea or formed stools? why?

Answer 20

formed stools, can form the cysts because it’s slower

Question 21

how to diagnose Giardiasis? (3)

Answer 21

fecal exam (microscopic)
test for antigen in feces
string test

Question 22

microscopic fecal exam

Answer 22

test for giardiasis

Question 23

direct ELISA test

Answer 23

test for giardiasis

Question 24

string test

Answer 24

test for giardiasis

Question 25

string test, aka

Answer 25

entero test

Question 26

entero test, aka

Answer 26

string test

Question 27

how to control the spread of giardiasis?

Answer 27

handwashing, treat drinking water, filter chlorinated water

Question 28

Metronidazole aka flagyl

Answer 28

treatment for giardiasis