ASCP MLS Review

Question 1

What species of parasite is found in:

• Outbreaks in swimming pools (FECAL ORAL ROUTE)
• Resistant to chlorine
• Associated with AIDS pts
• ACID-FAST POSITIVE

Answer 1

Cryptosporidium parvum

Question 2

What parasite is the pork tapeworm and how does it differ from the cow tapeworm?

Answer 2

Pork tapeworm –> Taenia solium
Cow –> Taenia saginata

T. solium has hooklets while T. saginata does not.
T. solium has ~12 uterine branches while T. saginata as about 24.

Question 3

What blood flagellate causes sleeping sickness what what is the intermediate host

Answer 3

Trypanosoma brucei, tse tse fly

NOT T. cruzi that causes Chagas disease or myocarditis. (vector is kissing bug)

Question 4

How does the egg of Taenia spp look like and can you speciate it from the egg?

Answer 4

Thick walled and striated. No, you cannot, eggs look the same between T. solium and T. saginata. Have to look at the adult (scolex; hooklets and uterine branches)

Question 5

What two filarial worms cause Elephantiasis?

Answer 5

Wuchereria bancrofti and Brugia malayi