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采用空斑减少中和试验（ＰＲＮＴ）检测疫苗效力的方法，对肾综合征出血热地鼠肾细胞灭活疫苗（Ⅱ型）进行了系统地稳定性试验研究。结果表明，疫苗置３７℃３ 天，室温３ 周，２～８℃保存一年、一年半、两年和两年半。效力试验检测结果均达到合格标准，证明疫苗稳定性良好。
In order to test the efficacy of the vaccine by using the plaque reduction and neutralization test (PRNT), we conducted a systematic study on the stability of the inactivated renal cell vaccine (type Ⅱ) of hemorrhagic fever with renal syndrome. The results showed that the vaccine was stored at 37 ℃ for 3 days, at room temperature for 3 weeks and at 2-8 ℃ for one year, one and a half years, two years and two and a half years. Efficacy test results have reached the eligibility criteria, proof of good vaccine stability.