EN
The author performed the microprecipitation test according to Roth, with use of larvae of Trichinella spiralis. To this test were submitted: 1) 335 healthy persons, 2) 580 persons affected with various diseases (table II) but not suffering from trichinellosis, and 3) 262 swine not infected with Trichinella spiralis. The percentages of positive results obtained in these groups were: 19.40% for the first group, 30% for the second and 26.72% for the third group. This is rather to be considered disadvantageous when evaluating the specificity of the test.