Examinations of digestive system parasitoses in people back from the tropics and subtropics.

The paper presents results of epidemiological-clinical studies of digestive system parasitoses in persons (seamen and other professional groups) back from the tropics. The author carried out multidirectional examinations (general medical with rectoscopy, laboratiorial: parasitological, microbiological, mycological and epidemiological) of 3,315 persons. The results were evaluated statistically. He defined the frequency of particular parasite invasion in men in dependence on region of stay, profession, length of service and age, and frequency of occurrence of symptomatic parasitoses as well as clinical picture of particular parasite species invasion. Special attention was paid to amoebiasis which the author separated from the whole material under analysis. The author made a comparison between cases of imported (181) and indigenous (164) amoebiasis as well as amoebiasis found in foreigners coming from tropical countries and staying in Poland (38). On the basis of many years observations of persons cured of amoebiasis he analysed the probability of occurrence of postamoebic syndrome. The material under examinations allowed to recognize the picture of digestive system parasitoses imported to Poland from the tropics.