[1] World Health Organization. Weekly epidemiological update on COVID-19 - 30 November 2021. 2021. https://www.who.int/publications/m/item/weekly-epidemiological-update-on-covid-19---30-november-2021. [2022-1-17].https://www.who.int/publications/m/item/weekly-epidemiological-update-on-covid-19---30-november-2021
[2] Wang YP, Chen RC, Hu FY, Lan Y, Yang ZW, Zhan C, et al. Transmission, viral kinetics and clinical characteristics of the emergent SARS-CoV-2 Delta VOC in Guangzhou, China. EClinicalMedicine 2021;40:101129. http://dx.doi.org/10.1016/j.eclinm.2021.101129CrossRef
[3] Zhang M, Xiao JP, Deng AP, Zhang YT, Zhuang YL, Hu T, et al. Transmission dynamics of an outbreak of the COVID-19 Delta variant B.1.617.2 - Guangdong province, China, May–June 2021. China CDC Wkly 2021;3(27):584 − 6. http://dx.doi.org/10.46234/ccdcw2021.148.http://dx.doi.org/10.46234/ccdcw2021.148
[4] World Health Organization. Weekly epidemiological update on COVID-19 - 28 December 2021. 2021. https://www.who.int/publications/m/item/weekly-epidemiological-update-on-covid-19---28-december-2021. [2022-1-17].https://www.who.int/publications/m/item/weekly-epidemiological-update-on-covid-19---28-december-2021
[5] Chen JH, Wang R, Gilby NB, Wei GW. Omicron variant (B1.1.529): infectivity, vaccine breakthrough, and antibody resistance. J Chem Inf Model 2022;62(2):412 − 22. http://dx.doi.org/10.1021/acs.jcim.1c01451CrossRef
[6] Abdullah F, Myers J, Basu D, Tintinger G, Ueckermann V, Mathebula M, et al. Decreased severity of disease during the first global Omicron variant COVID-19 outbreak in a large hospital in Tshwane, South Africa. Int J Infect Dis 2022;116:38 − 42. http://dx.doi.org/10.1016/j.ijid.2021.12.357CrossRef
[7] Kang M, Wei JJ, Yuan J, Guo JX, Zhang YT, Hang J, et al. Probable evidence of fecal aerosol transmission of SARS-CoV-2 in a high-rise building. Ann Intern Med 2020;173(12):974 − 80. http://dx.doi.org/10.7326/M20-0928CrossRef
[8] Wong SC, Au AKW, Chen H, Yuen LLH, Li X, Lung DC, et al. Transmission of Omicron (B1.1.529) - SARS-CoV-2 variant of concern in a designated quarantine hotel for travelers: a challenge of elimination strategy of COVID-19. Lancet Reg Health West Pac 2022;18:100360. http://dx.doi.org/10.1016/j.lanwpc.2021.100360CrossRef