1.6.3 Protozoans (Sporozoans, Other spp.) Flashcards
IS - Oocyst, immature with single sporoblast, sporocyst, sausage shape sporozoites
DH: Man
Isospora belli/Cytoisospore belli
In Isospora belli, the Oocyst is transparent
T or F
T
MOT of Isospora belli?
Ingestion of sporulated cyst in fecal
Oral-fecal route
Isospora belli causes anorexia, abdominal pain and diarrhea
T or F
T
Cryptosporidium parvum is associated with?
AIDS
Cryptosporidium parvum causes watery and frothy ______ with oocyst
Feces
Cryptosporidium infects what part of th body?
Intestine
Previously called P. carinii which causes pneumonia
Pneumocystis jiroveci
Pneumocystis jiroveri is idenified with ______ methenamine silver stain
Gomori
Pneumocystis jiroveri infects what organ?
Lungs
Toxoplasma gondii has a ________ shaped
Comma
Most common cause of ENCEPHALITIS in AIDS patient
Toxoplasma gondii
Intermediate host of Toxoplasma gondii includes:
Man
Cat
Cattle
Pigs
Sheep
Poultry
T or F
T
Definitive host for Toxoplasma?
Cat
Infective stage of Toxoplasma from cat to man?
Oocyst
Infective stage of Toxoplasma from man to man?
Tachyzoites -> Bradyzoites
Schizogony and sporogony occur in ___________ mucosa
Intestinal
Toxoplasma gondii host for sexual stage?
Cat
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
a and c
a: Warm blooded
c. Resistant
MOT of Toxoplasma includes:
- Ingestion (Oral fecal route)
- Transplacental
- Transmammary
- Blood-transfusion
Which of the following is wrong?
None
Toxoplasma Clinical S/S and disease:
Invasion of CNS can be fatal but typically occurs only in ____________________ patients
Immunocompromised
Toxoplasma Clinical S/S and disease:
The LEAST concern is that this parasite can cross the placenta
T or F
F
Greatest
Toxoplasma Lab Dx:
4 fold increase in the titer of IgG or high levels of IgM and IgG antibodies are considered ___________
Diagnostic
Toxoplasma Lab Dx:
Concurrent elevations of IgM and IgA indicates __________ infection and are used to screen _____________
Early
Pregnant woman
Prodrome like syndrome belongs to what Sporozoans?
Babesia spp. (microti, divergens)
Self-limited in Immunocompetent hosts and only associated with Immunocompromised patients
Cryptosporidium parvum
