The COVID-19 pandemic developing rapidly in 2020 is triggered by the emergence of a new human virus—SARS-CoV-2. The emergence of a new virus is not an unexpected phenomenon and has been predicted for many years. Since the virus has spread all over the world, it will be very difficult or even impossible to eradicate it. A necessary condition for complete or partial elimination of the virus is to have an effective vaccine. It is possible that SARS-CoV-2 will become milder in the next few years and COVID-19 will then only threaten individuals from risk groups.

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SARS-CoV-2：关于COVID-19大流行的评论

新型人类病毒SARS-CoV-2的出现引发了2020年COVID-19大流行的迅速发展。新病毒的出现并非意料之外的现象，并且已经预测了许多年。由于该病毒已经遍及世界各地，因此根除它将非常困难，甚至不可能。要完全或部分消除病毒，必须具备有效的疫苗。未来几年SARS-CoV-2可能会变得更温和，然后COVID-19只会威胁来自危险人群的个体。