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Microbiology > Parasitology > Flashcards

Parasitology Flashcards

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Biology 101 flashcards
1
Q

Wichi parasite have coinfect with Borrelia burgdorferi (Lyme disease)?

A

Babesia

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2
Q

Leading nematode infection in US

A

Enterobius vermicularis

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3
Q

Dysentery caused by parasite

A

Entamoeba histolytica

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4
Q

Common agent in waterborne diarrhea outbreaks

A

Giardia lamblia

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5
Q

Most common cause of persistent watery diarrhea on AIDS

A

Cryptosporidium (acid-fast oocysts in stool)

*differentiate with isospora belli (may be 2nd cause) (elliptical oocyst, 2 sporocysts each with 4 sporozoites)

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6
Q

Where do you find amastygotes and trypomastigotes of the hemoflagellates?

A

Trypanosomes: blood ▶️ trypomastigotes, tissue ▶️ amastygotes
Leishmania ▶️ amastygotes always in macrophages

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7
Q

Leading cause of focal CNS disease in AIDS patients

A

Toxoplasma gondii

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8
Q

First intermediate hosts of trematodes

A

Snails

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9
Q

Agent associated with bladder carcinoma

A

Schistosoma haematobium

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10
Q

Causal agent of sparganosis and pathway of transmission.

A

Diphyllobothrium latum

Drinking pond water with crustaceans carrying the larval or frog/snakes poultices

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11
Q

Clinical presentation of Diphyllobothrium latum as intestinal tape worm.

A

Meagloblastic anemia

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12
Q

How do you diagnose infection by Echinococcus granulosus, disease that causes it.

A

Hydatid cyst disease

Imaging, serology ▶️ because encyst in liver and lungs

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13
Q

Most frequent helmint parasite in US. Clinical presentation. Transmission.

A

Enterobius vermicularis (pinworm) ▶️ large intestine
Perianal itching
Autoinfection, person to person (eggs)

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14
Q

Helmint associated with appendicitis. What other presentation may have? Transmission.

A

Trichuris trichura (whipworm)
Rectal prolapse
Eggs ingested

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15
Q

Causal agent of trichinosis, clinical presentation. Transmission.

A

Trichinella spiralis
Viable encysted larvae in meat ingested
Myalgia, fever splinter hemorrhages, eosinophilia

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16
Q

Most common helmint worldwide, largest roundworm. Transmission, diagnosis.

A

Ascaris lumbricoides
Eggs ingested
Bile stained ▶️ knobby eggs in stool

17
Q

Pregnant woman acutely infected by toxoplasma at eight month. Risk and disease in the fetus.

A

⬆️ probability to infect fetus ▶️ retinochoroiditis

  • mother only passes this parasite during acute infection, future fetuses will be protected with the disease
  • only a IgM (+) in newborn is proof of child infection ▶️ treat
18
Q

Obligate intracellular protozoa

A 
Plasmodium
Toxoplasma gondii
Babesia 
Leishmania 
Trypanosoma cruzi

Microbiology (14 decks)

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