傻子都能猜到了，中国大部分都是L，次生的，孙子辈的，爷爷都是S，都是外来的，

只是L比S更容易传播。

猪头啊，你明白啦？？

“To test whether the two types of SARS-CoV-2 had differences in temporal and spatial distributions, we stratified the viruses based on the locations and dates they were isolated (Table S1). Among the 27 viruses isolated from Wuhan, 26 (96.3%) were L type, and only 1 (3.7%) was S type. However, among the other 73 viruses isolated outside Wuhan, 45 (61.6%) were L type, and 28 (38.4%) were S type.”

https://watermark.silverchair.com/nwaa036.pdf?token=AQECAHi208BE49Ooan9kkhW_Ercy7Dm3ZL_9Cf3qfKAc485ysgAAAmswggJnBgkqhkiG9w0BBwagggJYMIICVAIBADCCAk0GCSqGSIb3DQEHATAeBglghkgBZQMEAS4wEQQMeBzLbAbpSMy9W7twAgEQgIICHh9JY5aRgI0UBmDsHwnTblgUW3dDLf4m8lV4FqZP-BdDw1Sc9R7uJihLo1CkyOE_vJTIHzCxDKGxVduMTn8yMKu_0bEUfmmezVisKcCs02AMqFEOY-MmnX4Iavou4dYJ-1-bpfOzZVyrJqLBXZxr6dMwfuGscOCQ0-SYycyRLz7EdcT-mKMGs7AqW2Xe7YwNP-Bf-tkJT6yHGsY-ukvYu-lhnVh19LcrcK0O6J16lJ4u3lHd3UcsG5ilASq6yfwYaiIg5ZhHDFbxBaCx0Zuymbn-eJ23T2HlWHxTLkpxfMzB981SnQihHYo8hrTu-_5k79AdLommOQtBzuwdxs4J9JNzenHVIN3EfLNUVIF5vBRuFsfRKlOvYAEW_v-QZS_-Zb5Veoe4CtA68w9K-hF-xQNPhhqYlb8LYzppt5RKq3YNtmmGB_mK8R-CYIXCAlYCk1-4lRAXKwPrGnfL4AC5OauD36d0M34L1g7zu-COK0HikybasHhmSaLiGIm2j42XRsoISoMCyJIX4BMdyIdg5isIciCvEdqZFajW0aOxhSNozyZnb2oeMC6y0oF0DQngHQ5VRzCt07P5a2rdOZCf-fYEhp-XrGHRULn8rFK1GQLg39Q06fnOHBFEYv8CHESrXn5p99rC0XJcAwoLRZRVjhY2_AMLcTeglnh0l_W1cj4mSQk1tjee4FmXO4eEjgXfy1sFo3xwG4eI6ILgqqq_