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Questions and Answers
What is the primary mode of transmission of Cryptosporidium?
What is the primary mode of transmission of Cryptosporidium?
- Through airborne contact
- Through infected blood transfusion
- Through direct skin contact
- Through contaminated water and fecal-oral route (correct)
What is the typical appearance of Cryptosporidium oocysts under staining?
What is the typical appearance of Cryptosporidium oocysts under staining?
- Purple-blue under acid fast staining
- Greenish-blue under Giemsa staining
- Amethyst-like under acid fast staining (correct)
- Bright pink under fluorescent staining
Which of the following is NOT a treatment option for Cryptosporidiosis?
Which of the following is NOT a treatment option for Cryptosporidiosis?
- Spiromycin
- Metronidazole (correct)
- Ciprofloxacin
- Nitazoxanide
What is the primary location where Cryptosporidium parasites attach and cause damage?
What is the primary location where Cryptosporidium parasites attach and cause damage?
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What is the primary method of prevention for Cryptosporidiosis?
What is the primary method of prevention for Cryptosporidiosis?
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Study Notes
Cryptosporidium Characteristics
- Causes profound diarrhea in AIDS patients, particularly in immunocompromised individuals, such as those with HIV
- Unicellular, partially acid-fast, and releases oocytes through feces, which can be absorbed orally
Infection and Transmission
- Infectious cysts are excreted in watery stool, containing four motile sporozoites that attach to the small intestinal wall, causing damage
- Oocysts can be transmitted through contaminated water, appearing like amethyst under staining
Diagnosis and Treatment
- Nitazoxanide is a treatment option for immunocompetent individuals
- Spiromycin is another treatment option, although not FDA-approved in the US
- Filtration can be used to remove oocysts from water
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