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目的检测发生在同一RNA病毒不同株系的混合感染1例.方法使用异双体动态分析法和测序检测混合感染.结果确认此病例的基因型为1型和3型的混合感染.结论异双体动态分析法是一个快速,简单,准确的方法.“,”Objective To detect the mix infection of a single RNA vival species. Methods We used hetero-duplex mobility analysis (HMA) and sequencing to detect mixed infection. Results The genotype of mixed in-fection was genotype 1 and 3. Conclusion lHMA is a rapid, simple and accurate method to detect mixed in-fection.