. 2022 Dec 16;4(50):1136–1142. doi: 10.46234/ccdcw2022.229

Table 1. The detection of SARS-CoV-2 Omicron recombinant and subvariants under monitoring in the mainland of China and the world.

Lineage*	Earliest recorded sequence in the imported SARS-CoV-2 surveillance			Date of first local transmission	Earliest documented samples in the world ^†
Lineage*	Submitted PLAD	Submission date	Imported country	Date of first local transmission	Earliest documented samples in the world ^†
Abbreviation: SARS-CoV-2=severe acute respiratory syndrome coronavirus 2; PLAD=provincial-level administrative division; WHO=World Health Organization. * Includes the descendent lineages. ^† According to the data published by the Pango lineages (6). ^§ Recombinant lineage of BA.1 and BA.2. ^¶ Omicron subvariants under monitoring designated by WHO (7).
XU^§	Guangdong	2022-4-21 (Collection date: 2022-3-12)	United Arab Emirates	−	Japan, 2022-1
BA.4^¶	Guangdong	2022-5-4 (Collection date: 2022-4-30)	Netherlands	Guangdong, 2022-6-25	South Africa, 2022-1
BA.5^¶	Shanghai	2022-5-15 (Collection date: 2022-4-29)	Uganda	Chongqing, 2022-6-11	South Africa, 2022-1
BA.2.12.1^¶	Sichuan	2022-4-29 (Collection date: 2022-4-15)	Canada	Sichuan, 2022-7-15	United States of America, 2021-12
BA.2.13^¶	Guangdong	2022-6-24 (Collection date: 2022-6-20)	Canada	−	United States of America, 2021-12