This picture shows that 3961 genomes sampled worldwide had divined from China in early Dec. 2019.
There is no any other coronavirus strain has been found in the world but all sars-Cov-2 has only one ancestor from China.
关于covid19的点滴记录
This picture shows that 3961 genomes sampled worldwide had divined from China in early Dec. 2019.
There is no any other coronavirus strain has been found in the world but all sars-Cov-2 has only one ancestor from China.