多国急冻食品早前相继验出含有新冠病毒,由新加坡及爱尔兰专家组成的团队,近日把多种急冻食品加入病毒样本,结果发现病毒可在低温环境残留至少3周。研究结果于本月18日在生物学预印本网站bioRxiv发表。
研究团队把购自新加坡超市的三文鱼、鸡肉、猪肉切片,再加入新冠病毒样本,其后再把它们储存在摄氏(下同)零下20度及4度的环境当中,结果21天后发现病毒仍然存活。
专家认为受污染急冻食品并非主要感染途径,但把这些食物运往没有感染地区或引发疫情。研究或解释为何一些地区一段时间没有新症,却突然出现不明感染案例,建议消费者接触急冻食品前先洗手,并彻底煮熟食物。
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