1.6.3 Protozoans (Sporozoans, Other spp.)

Question 1

IS - Oocyst, immature with single sporoblast, sporocyst, sausage shape sporozoites

DH: Man

Answer 1

Isospora belli/Cytoisospore belli

Question 2

In Isospora belli, the Oocyst is transparent

T or F

Answer 2

T

Question 3

MOT of Isospora belli?

Answer 3

Ingestion of sporulated cyst in fecal

Oral-fecal route

Question 4

Isospora belli causes anorexia, abdominal pain and diarrhea

T or F

Answer 4

T

Question 5

Cryptosporidium parvum is associated with?

Answer 5

AIDS

Question 6

Cryptosporidium parvum causes watery and frothy ______ with oocyst

Answer 6

Feces

Question 7

Cryptosporidium infects what part of th body?

Answer 7

Intestine

Question 8

Previously called P. carinii which causes pneumonia

Answer 8

Pneumocystis jiroveci

Question 9

Pneumocystis jiroveri is idenified with ______ methenamine silver stain

Answer 9

Gomori

Question 10

Pneumocystis jiroveri infects what organ?

Answer 10

Lungs

Question 11

Toxoplasma gondii has a ________ shaped

Answer 11

Comma

Question 12

Most common cause of ENCEPHALITIS in AIDS patient

Answer 12

Toxoplasma gondii

Question 13

Intermediate host of Toxoplasma gondii includes:

Man
Cat
Cattle
Pigs
Sheep
Poultry

T or F

Answer 13

T

Question 14

Definitive host for Toxoplasma?

Answer 14

Cat

Question 15

Infective stage of Toxoplasma from cat to man?

Answer 15

Oocyst

Question 16

Infective stage of Toxoplasma from man to man?

Answer 16

Tachyzoites -> Bradyzoites

Question 17

Schizogony and sporogony occur in ___________ mucosa

Answer 17

Intestinal

Question 18

Toxoplasma gondii host for sexual stage?

Answer 18

Cat

Question 19

Toxoplasma gondii can:

a. Infect cold-blooded animals
b. Survive in the environment for several MONTHS to more than 1 year
c. Susceptible to disinfectant, freezing, and drying
d. Killed by heating 70C

Which of the following is wrong

Answer 19

a and c

a: Warm blooded
c. Resistant

Question 20

MOT of Toxoplasma includes:

• Ingestion (Oral fecal route)
• Transplacental
• Transmammary
• Blood-transfusion

Which of the following is wrong?

Answer 20

None

Question 21

Toxoplasma Clinical S/S and disease:

Invasion of CNS can be fatal but typically occurs only in ____________________ patients

Answer 21

Immunocompromised

Question 22

Toxoplasma Clinical S/S and disease:

The LEAST concern is that this parasite can cross the placenta

T or F

Answer 22

F

Greatest

Question 23

Toxoplasma Lab Dx:

4 fold increase in the titer of IgG or high levels of IgM and IgG antibodies are considered ___________

Answer 23

Diagnostic

Question 24

Toxoplasma Lab Dx:

Concurrent elevations of IgM and IgA indicates __________ infection and are used to screen _____________

Answer 24

Early

Pregnant woman

Question 25

Prodrome like syndrome belongs to what Sporozoans?

Answer 25

Babesia spp. (microti, divergens)

Question 26

Self-limited in Immunocompetent hosts and only associated with Immunocompromised patients

Answer 26

Cryptosporidium parvum