新冠病毒有很强的传染性，而且这个病毒十分狡猾。其狡猾表现在三个地方：检

The new coronavirus is very contagious, and the virus is very cunning. Its cunning is manifested in three places: difficult to detect, complicated symptoms, and high concealment. In the early stage, nucleic acid detection was basically used, but the accuracy rate was found to be unsatisfactory, and there were always missed detections. Therefore, CT detection must be added to the diagnosis.

新冠病毒有很强的传染性，而且这个病毒十分狡猾。其狡猾表现在三个地方：检测难、症状复杂、隐蔽性高。初期基本采用核酸检测，但是发现准确率一直不够理想，总存在漏检的，所以后来在诊断中必须加上CT检测手段。

The new coronavirus is highly infectious, and the virus is very cunning. Its cunning is manifested in three aspects: difficult detection, complex symptoms and high concealment. At the initial stage, nucleic acid detection was basically used, but the accuracy rate was not ideal, and there was always missed detection, so CT detection must be added later in the diagnosis.