> Of 23 samples that came from Wuhan, only three were type A, the rest were type B, a version two mutations from A. But in other parts of China, Forster says, initially A was the predominant strain. For instance, of nine genome samples in Guangdong, some 600 miles south of Wuhan, five were A types. [0]
[0] https://www.usnews.com/news/best-countries/articles/2020-05-...