Out of the 250 examined human corpses in 5 cases (2 per cent) were demonstrated larvae of trichinella both by the use of trichinoscopy directly and by the digestion method (Table 1). The number of larvae per 1 g. of the examined muscles oscilated in the case of trichinoscopy from 0,35 to 31,5, in case of digestion from 0,05 to 2,9 (Table 2). The state of the capsules and of the parasites suggested old infections, whereby the dead persons were subjected during their life (during the war period and postwar years) to migrations of the population, what suggest the contracting of the invasion outside the province of Szczecin. The age of the infected oscilated within the limits from 51 to 70 years. In none of the cases was it possible to establish on the basis of conversation with the families of the dead whether the infections run a course accompanied by symptoms. Only in 1 case there was a fresh infection and simultaneously there is a certain probability that the source of the invasion was pork meat from a pig bred on the terrain of the Szczecin province. The case was in detail discussed, particularly the lesions found during the postmortem examinations. The patient died from lung tuberculosis
