In addition, the serum antibody levels after treatment using praziquantel reduced rapidly and the negative conversion rates were 86.67% (65/75)and 96.00% (72/75) three and six months after treatment.

• 检测81例姜片虫病患者治疗前后不同时间血清抗体的变化，提示驱虫后血清特异性抗体下降较快：在治疗后3个月，阳性反应阴转率为86．67%25（65／75）；半年后的阴转率高达96．00%25（72／75）。