[Medical study of missionaries returning from overseas].

The missionary Fathers live in very difficult conditions, very near local populations. The length of their stay is normally of 19 years (from 1 to 61 years). Among 345 files, most of which were drawn up after a stay in Asia, the malaria antecedents were found to be very frequent. The intestinal parasitic infestation (approx. 30%) is lower than in the autochthonous population with a majority of Trichuris trichuria (11%).