Long-term infection with Schistosoma mansoni (Gezira strain--Sudan) in the Nile rat (Arvicanthis niloticus).

The long-term infection with Schistosoma mansoni (Gezira strain--Sudan) was studied in the Nile rat (Arvicanthis niloticus) to investigate the 'self cure' phenomenon. The results indicated that while a considerable number of worms and eggs were still recovered by week 28 post-infection, elimination of some of the worms occurred by week 20.