Intestinal Parasite I (PART 3) Flashcards Preview

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Flashcards in Intestinal Parasite I (PART 3) Deck (16):
1

What is the 'fragile, enteric 'amoeba' with two nuclei' but is NOT an amoeba

Dientamoeba fragilis

2

Dientamoeba fragilis:
- what disease does it cause

dientamoebiasis

3

Dientamoeba fragilis:
- infectious form

Troph

4

Dientamoeba fragilis:
- appearance of troph

WITHOUT external flagella, irregular rounded shape, two nuclei, "dirty" cytoplasm

5

Dientamoeba fragilis:
- appearance of cyst

NO CYST FORM

6

Another name for pathogenic apicomplexa

sporozoa

7

How do pathogenic apicomplexa infect?

invade and multiply within epithelial cells

8

Which are second most commonly diagnosed intestinal parasites in the US?

Cryptosporidium spp

9

Cryptosporidium spp:
- Habitat

Waterborne - big outbreaks in Milwaukee, WI

10

Cryptosporidium spp:
- how is it transmitted

fecal-oral rout, food, person to person contact

11

Cryptosporidium spp:
- Common settings (4)

- municipal water supply-accciated outbreaks (Milwaukee)
- Children in daycare
- people in contact with farm animals
- people with AIDS who have unrelenting, watery diarrhea

12

Cryptosporidium spp:
- infectious form

oocyst

13

Cryptosporidium spp:
- significant symptom

profuse watery diarrhea (up to 10L/day)

14

Cryptosporidium spp:
- Test of choice

EIA

15

Cryptosporidium spp:
- what color do they stain in a modified kinyoun stain?

red because they are ACID-FAST

16

Cryptosporidium spp:
- Oocyst appearance

4-6 micrometers, have 4 crescent-shaped sporozoite present within them