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Diagn Microbiol Infect Dis. 2003 Sep;47(1):345-7.

The Kato-Katz method is reliable for diagnosis of Clonorchis sinensis infection.

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Department of Parasitology and Tropical Medicine, Seoul National University College of Medicine, 110-799 Seoul, South Korea.


We evaluated the sensitivity of three fecal examination methods, the Kato-Katz (KK) method, formalin-ether technique (FE) and direct smear, for the diagnosis of clonorchiasis. The KK method proved to be most sensitive in six groups with different egg counts. In cases of extremely light infection FE was found to be more sensitive than KK.

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