| effect of screening and treatment on imported intestinal parasite infections: results from a randomized, controlled trial. | a randomized, controlled trial was undertaken to evaluate the effects of a screening program for intestinal parasite infection in newly arrived southeast asian refugees to montréal, québec, canada, during 1982-1983. families assigned to the screened groups were examined, infected persons were treated and followed until they were infection-free, and all screened families were reexamined at six months. families assigned to the control groups were examined at six months only. statistically signific ... | 1989 | 2646918 |