Li Ning, deputy director of the National Center for Food Safety Risk Assessment, said at a press conference on the State Council's Joint Prevention and Control Mechanism on 31 January that some foods have recently been tested positive for the COVID-19 nucleic acid, which has attracted widespread attention from the society. The COVID-19 nucleic acid test is mainly for nucleic acid fragments of the virus. Whether it is a live virus or a dead virus, it may be positive for nucleic acid. Therefore, a positive nucleic acid for food does not mean that it is infectious. The positive nucleic acid test of these foods can only indicate that it has been contaminated by the COVID-19. So far, there have been no cases of consumers contracting the COVID-19 through purchasing and processing food.

        国家食品安全风险评估中心副主任李宁31日在国务院联防联控机制新闻发布会上表示，最近一些食品检出新冠病毒核酸阳性，受到了社会普遍关注。新冠病毒核酸检测主要是针对病毒的核酸片段，无论是活病毒、死病毒，都可能检出核酸阳性，因此食品检出核酸阳性，不代表它就具有传染性。这些食品检出核酸阳性，只能说明它曾经被新冠病毒污染过，到目前为止，还没有发现消费者经采购、加工食品而感染新冠病毒的案例报道。

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