The pathological examination or the clinical observation for 3 months to 3 years was the diagnostical golden standard. 以病理学检查、或以3个月至3年的临床观察结果作为诊断的金标准。
Therefore, the present researches still focus on produceing serologically diagnostical kits with higher sensitivity and specificity. 因此,目前的研究焦点仍然是研制出敏感性,特异性较高的血清学诊断试剂。