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Biological Tests for Hydatid Disease

A Comparison of the Casoni and Weinberg Tests

In a series of 106 cows both the intradermal and complement fixation tests for hydatid disease were done to compare their relative values. These tests were checked by examination of the organs after slaughtering.

Of 44 cows in which hydatid cysts were found, 38 or 86.3 per cent had a positive skin test, and 26 or 59 per cent had a positive complement fixation test.

There were eleven false positive skin tests and ten false positive complement fixation tests. The rest of the series agreed with the findings in the organs.

One of the two tests was positive in all of the cows in which hydatid cysts were found.