Parasit Cyclospora cayetanensis

Question 1

Cyclospora cayetanensis was thought to be a
member of __________________because it showed photosynthesizing organelles and autofluorescing particles characteristic of the
blue green algae.

Answer 1

cyanobacteria

Question 2

The first stage of the life cycle of C. cayetenensis

Answer 2

Ingestion of sporulated oocysts, containing 2 sporocysts and 2 sporozoites

Question 3

The released sporozoites C. cayetenensis invade the _____________________, although the site of predilection was found to be the ___________

Answer 3

epithelial cells of the small intestines, jejunum

Question 4

Multiple fissions of the C. cayetenensis sporozoites
take place inside the cells to produce meronts,
which contain _______________ merozoites during the first generation, and only ___________ merozoites in
the second generation

Answer 4

8 to 12, 4

Question 5

The oocysts C. cayetenensis undergo complete sporulation within _______________ in a warm environment.

Answer 5

7 to 12 days

Question 5

recommended method of sample and procedure for the diagnosis of cyclosporiasis

Answer 5

Direct microscopic examination of fecal
smears under high magnification (400x)

Question 5

Infective stage of C. cayetenensis

Answer 5

Sporulated oocysts

Question 6

Initial symptoms of cyclosporiasis include ____________________ and ________________, which may occur ______________________
after exposure.

Answer 6

malaise and low
grade fever, 12 to 24 hours

Question 6

Diagnostic stage of C. cayentenensis

Answer 6

Unsporulated oocysts

Question 7

Drug recommended for cyclosporiasis

Answer 7

trimethoprim-sulfamethoxazole
160/800 mg twice daily for 7 days

Question 8

Drug recommended for cyclosporiasis

Answer 8

Cystoisospora belli

Question 9

Sporulation of Cystoisospora belli usually occurs within _______________________ after passage with the stool.

Answer 9

48 hours

Question 9

Cystoisospora belli sporulated oocyst contains ___________________ each containing _______________________

Answer 9

two sporocysts, our sporozoites
(infective stage)

Question 10

oocysts can be seen in a
fecal smear stained by a _______________________________, where they stain granular red color
against a green background

Answer 10

modified Ziehl-Neelsen
method

Question 11

treatment for cystoisosporadiasis

Answer 11

trimethoprim-sulfamethoxazole 160/800 mg four times per day for 10 days, then two times
per day for 3 weeks

Question 11

immunocompromised poeple infected cystoisispora