Why are there asymptomatic infections Zhou Qi, Dean of the Chinese Academy of Sciences: New Crown Pneumonia is very cunning camouflaging itself during evolution and transmission.

Some asymptomatic infections do not find more effective detection methods and reagents or do not find more important symptoms and clinical detection markers worthy of attention.

In the future prevention and control process, how to prevent, alert and detect, and clearly preventive measures are the main directions of the attack.