CRYPTOSPORIDIOSIS

Question 1

What protozoa causes Cryptosporidosis?

Answer 1

Cryptosporidium parvum

Question 2

S/S

Answer 2

diarrhea, abdominal cramps, loss of
appetite, low-grade fever, nausea, and vomiting. Infected persons may be asymptomatic. The disease can be prolonged
and life-threatening in severely immunocompromised persons.

Question 3

Which one Probable or Confirmed?

The detection of Cryptosporidium antigen by immunodiagnostic methods.

Answer 3

Probable

Question 4

Which one Probable or Confirmed?

Any of the following
• Cryptosporidium oocysts in stool by microscopic examination;
• or Cryptosporidium in intestinal fluid or small-bowel biopsy specimens;
• Cryptosporidium oocyst or sporozite antigens by immunodiagnostic methods, (e.g., ELISA);
• Cryptosporidium by polymerase chain reaction (PCR) techniques; or
• Cryptosporidium demonstration of reproductive stages in tissue preparations.

Answer 4

Confirmed

Question 5

True or false?

Test results known to be obtained with commercially-available immunochromatographic card tests are confirmatory?

Answer 5

False:

They are considered probable case criteria due to a recent report of unacceptably high rates of false-positive results