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Flashcards in Parasites Deck (63)
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31

What are the clinical manifestations of Enterobius vermicularis? (2)

perianal itching-periodic nocturnal occasional vaginitis.

32

Which regions are associated with Wuchereria bancrofi? (3)

Asia, Africa, Latin America

33

What are the clinical manifestations of Leishmania? (5)

"Oriental sore" (aka Chiciero's ulcer)-heals but leaves a pitted scar. Visceral leishmaniasis (Kala azar)-hepatosplenomegaly, grey skin, diarrhea, lymphadenopathy 90% mortality if not treated.

34

What lab findings are useful to help diagnose Plasmodium species? (3)

glesma stain can identify species. Initial IgM increase, subsequent IgG increase

35

Relevant epidemiology and risk factors associated with Cryptosporidium parvum. (2)

Epidemics in day cares and other institutions. May be lethal in immunocompromised.

36

How is Cryptosporidium parvum transmitted? (2)

Fecal-Oral, person to person. Contaminated water.

37

How is trichomonas vaginalis diagnosed?

trophozoites on wet mount

38

What are the clinical manifestations of Taenia (T. saginata, T. solium)? (2)

malnutrition, cysticercosis (space occupying lesions, serious if in brain)

39

What are the clinical manifestations of entamoeba histolytica? (3)

bloody, histolytic (ie 'broken cell'), mucous diarrhea with abdominal pain, cramping and flatulence. Alternates with constipation for months to years. May progress to liver where it will cause an abscess with RuQ pain, weight loss, fever and hepatomegaly.

40

What is the morphology of Plasmodium species?

sporozoa

41

What are the clinical manifestations of Trichinella spiralis? (4)

trichinosis-fever, myalgia, periorbital edema, eosinophilla, acute inflammation

42

What is the morphology of Cryptosporidium parvum?

sporozoa

43

Trichinella spiralis (a nematode) is usually found in what food?

under cooked meat, usually pork

44

How is trichomonas vaginalis transmitted?

sexual

45

What is the major reservoir for Schistosoma species?

snails

46

Name two diseases caused by Toxoplasma

brain abscess in HIV, birth defects

47

Which disease does Leishmania donovani cause?

visceral leishmaniasis (kala-azar)

48

What are the clinical manifesations of Ascaris lumbricoides? (4)

ascariasis, fever, cough, wheezing, dyspnea, eosinophilia, migratory pulmonary infiltrates (compare asthma, bronchitis)

49

Identify the major virulence/toxicity factors associated with Leishmania

use histiocytes to invade every organ

50

What are the clinical manifestations of Babesia bigemina (Babesia microti)? (4)

fatigue, arthritis, prolonged fever and hemolytic anemia.

51

What is the major reservoir for Trichinella spiralis? (2)

pigs, bears

52

How is it entamoeba histolytica diagnosed? (2)

serology and/or trophozoites or cysts in stool

53

How is Giardia lambilia transmitted?

water or food contaminated with feces

54

What is the major reservoir for Plasmodium species?

humans

55

How is toxoplasma diagnosed? (2)

serology, biopsy

56

What are the clinical manifestations of Toxoplasma gondiii? (5)

abortion, still birth, malformation, chorloretinis, mental retardation. Toxoplasmosis is usually asymptomatic but encephalitis in immunocompromised

57

How is Babesia transmitted?

ixodes tick

58

What are the clinical manifestations of Giardia lamblia? (5)

gastroenteritis. non-bloody foul smelling diarrhea with abdominal cramps, distention, flatulence, nausea, vomiting and sometimes low grade fever.

59

How is Giardia lamblia diagnosed? (2)

trophozoites or cysts in stool

60

What condition does trypanosoma cruzi cause?

chagas disease