The intradermoreaction positive rateof schistosome antigen is 6.6%,but the stool microscopy of schistosome ovum and circumoval precipitatereaction are negativ...

• 6%25,但粪便虫卵检查和环卵沉淀试验均为阴性。结论大规模应用吡喹酮防治急性血吸虫病有显著的作用。