检查者只有通过相互关联的神经系统症状和体征才能做出正确判断。
The associated neurologic signs and symptoms give the examiner the correct answer.
患者中毒后周围神经系统症状和体征阳性率、中枢神经系统症状阳性率、各种精神症状阳性率（除幻听幻视外）均高于中毒前，差异有统计学意义（P<0.05）；
The positive rate of symptoms of peripheral nerves, central nerves and psychogeny except auditory and visual hallucination after poisoning was significantly higher than that before(P<0.05).
人们能毫无症状地携带血吸虫，但是在严重的情况下，他们会出现发烧、虚弱、脾脏和肝脏肿大、以及中枢神经系统问题。
People can carry Schistosoma worms without symptoms, but in severe cases fever, fatigue, enlargement of the spleen and liver and central nervous system problems can occur.
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