[1] Outbreak.info. SARS-CoV-2 (hCoV-19) mutation reports: lineage comparison. https://outbreak.info/compare-lineages?pango=BA.2.12.1&gene=S&threshold=0.2. [2022-5-2].https://outbreak.info/compare-lineages?pango=BA.2.12.1&gene=S&threshold=0.2
[2] World Health Organization. COVID-19 weekly epidemiological update edition 90, published 4 May 2022. https://apps.who.int/iris/bitstream/handle/10665/353976/nCoV-weekly-sitrep4May22-eng.pdf?sequence=1&isAllowed=y. [2022-5-5].https://apps.who.int/iris/bitstream/handle/10665/353976/nCoV-weekly-sitrep4May22-eng.pdf?sequence=1&isAllowed=y
[3] Cao Y, Yisimayi A, Jian F, Song W, Xiao T, Wang L, et al. BA.2.12.1, BA.4 and BA.5 escape antibodies elicited by Omicron infection. bioRxiv 2022. http://dx.doi.org/10.1101/2022.04.30.489997CrossRef
[4] Centers for Disease Control and Prevention. COVID data tracker. 2022, April 29. https://covid.cdc.gov/covid-data-tracker. [2022-5-5].https://covid.cdc.gov/covid-data-tracker