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The organism Echinococcus granulosus is commonly diagnosed through imaging techniques such as ultrasound, CT scans, or serological tests, rather than through the routine ova and parasite examination. This is due to the fact that the eggs of Echinococcus granulosus are not frequently found in the stool of infected individuals, as the primary hosts for adult Echinococcus are canines, which shed the eggs.

In a laboratory context, a routine ova and parasite examination is typically aimed at detecting intestinal parasites, where the presence of eggs or larvae in stool samples can indicate an infection. However, Echinococcus infections may occur in humans (cystic echinococcosis) without resulting in the excretion of eggs, as humans are incidental hosts. Thus, relying solely on routine examination for diagnosis would be inappropriate.

The other organisms mentioned are accurately matched with their diagnostic procedures. For instance, Onchocerca volvulus is indeed diagnosed by examining skin snips for microfilariae, Cryptosporidium is effectively identified through modified acid-fast staining due to its resistant oocysts, and Schistosoma haematobium is correctly associated with urine sediment examination to detect eggs in the urine, particularly in cases of urogenital sch