认真读了原文，A型中武汉、广东共占21%

追踪的160例中A型共42例，分两个亚类，T亚类共9个—4个来自广东，3个日本人，2个美国人（有武汉居住史）；C亚类33个—5个武汉，8个中国其它省份和邻国（文章把中国其它省份和邻国合在一起）；15例是东亚之外主要是美国和澳洲。同蝙蝠病毒基因最接近的A型病人中，武汉、广东占21%，中国其它地区和东亚邻国占26%，2个居住武汉的美国人占5%，剩下的是东亚以外。

https://www.pnas.org/content/early/2020/04/07/2004999117

“There are two subclusters of A which are distinguished by the synonymous mutation T29095C. In the T-allele subcluster, four Chinese individuals (from the southern coastal Chinese province of Guangdong) carry the ancestral genome, while three Japanese and two American patients differ from it by a number of mutations. These American patients are reported to have had a history of residence in the presumed source of the outbreak in Wuhan. The C-allele subcluster sports relatively long mutational branches and includes five individuals from Wuhan, two of which are represented in the ancestral node, and eight other East Asians from China and adjacent countries. It is noteworthy that nearly half (15/33) of the types in this subcluster, however, are found outside East Asia, mainly in the United States and Australia.”

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• 有些人造谣说中国没A，白纸黑字都能否认 -特洛伊人- ♂ (23 bytes) () 04/11/2020 postreply 17:02:17