Coccidian Parasites Flashcards

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1
Q

Laboratory diagnosis of coccidian parasites r sample collection concentration technique

A

3 stool samples must be collected but in hiv patients. Sputum bronchial wash duodenal or jejuna aspirate can be collected..

Croncerntration sheathers sugar floating or saturation salt floatation — sedimentation technical formalin ether technique is used

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2
Q

Explain acid fast staining in coccidian parasites

A

They are stained by modified and fast staining 0.5-1 % sulphusicacid or acid alcohol kin youn method — sensitivity is low

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3
Q

What is gold standard test for cryptosporidium

A

Direct florscent antibody staining 10 times more sensitive than acid fast staining .

Oocysts of cyclospora fluorescence when viewed under epiflourscence cyst also show but not consistent

phase contrast microscopy also helpful

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4
Q

Features of oocyst of coccidian parasites

A

Cryptosporidium : 4-6 mu m 4 sporozoites

Cyclospora: 8-10 mum 2 sporozoites

cystoisospora:, 20-30 mum 4 sporozoites

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