[1] Chen C, Shi Q, Dong XP. Analyses of the duration and dynamics of the COVID-19 epidemic in 11 severely affected countries. Biomed Environ Sci, 2021; 34, 739−42.
[2] Yang YS, Peng FJ, Wang RS, et al. The deadly coronaviruses: The 2003 SARS pandemic and the 2020 novel coronavirus epidemic in China. J Autoimmun, 2020; 109, 102434. doi:  10.1016/j.jaut.2020.102434
[3] Goh GKM, Dunker AK, Foster JA, et al. Rigidity of the outer shell predicted by a protein intrinsic disorder model sheds light on the COVID-19 (Wuhan-2019-nCoV) infectivity. Biomolecules, 2020; 10, 331. doi:  10.3390/biom10020331
[4] Petersen E, Koopmans M, Go U, et al. Comparing SARS-CoV-2 with SARS-CoV and influenza pandemics. Lancet Infect Dis, 2020; 20, e238−44. doi:  10.1016/S1473-3099(20)30484-9
[5] Subbarao K, Mcauliffe J, Vogel L, et al. Prior infection and passive transfer of neutralizing antibody prevent replication of severe acute respiratory syndrome coronavirus in the respiratory tract of mice. J Virol, 2004; 78, 3572−7. doi:  10.1128/JVI.78.7.3572-3577.2004
[6] Yu FT, Yan LT, Wang N, et al. Quantitative detection and viral load analysis of SARS-CoV-2 in infected patients. Clin Infect Dis, 2020; 71, 793−8. doi:  10.1093/cid/ciaa345
[7] Diagnosis and treatment of pneumonitis caused by new coronavirus (trial version 7). http://bgs.satcm.gov.cn/zhengcewenjian/2020-03-04/13594.html. [2020-03-03]. (In Chinese)
[8] Kenny MT, Albright KL, Sanderson RP. Microneutralization test for the determination of mumps antibody in vero cells. Appl Microbiol, 1970; 20, 371−3. doi:  10.1128/am.20.3.371-373.1970
[9] Chan JFW, Lau SKP, To KKW, et al. Middle East respiratory syndrome coronavirus: another zoonotic betacoronavirus causing SARS-like disease. Clin Microbiol Rev, 2015; 28, 465−522. doi:  10.1128/CMR.00102-14
[10] Wang YQ, Zhang L, Sang L, et al. Kinetics of viral load and antibody response in relation to COVID-19 severity. J Clin Invest, 2020; 130, 5235−44. doi:  10.1172/JCI138759
[11] Seow J, Graham C, Merrick B, et al. Longitudinal observation and decline of neutralizing antibody responses in the three months following SARS-CoV-2 infection in humans. Nat Microbiol, 2020; 5, 1598−607. doi:  10.1038/s41564-020-00813-8
[12] Wajnberg A, Amanat F, Firpo A, et al. Robust neutralizing antibodies to SARS-CoV-2 infection persist for months. Science, 2020; 370, 1227−30. doi:  10.1126/science.abd7728
[13] Haveri A, Ekström N, Solastie A, et al. Persistence of neutralizing antibodies a year after SARS-CoV-2 infection. medRxiv, 2021.
[14] Robbiani DF, Gaebler C, Muecksch F, et al. Convergent antibody responses to SARS-CoV-2 in convalescent individuals. Nature, 2020; 584, 437−42. doi:  10.1038/s41586-020-2456-9
[15] Lopez OJ, Oliveira MF, Garcia EA, et al. Protection against porcine reproductive and respiratory syndrome virus (PRRSV) infection through passive transfer of PRRSV-neutralizing antibodies is dose dependent. Clin Vaccine Immunol, 2007; 14, 269−75. doi:  10.1128/CVI.00304-06
[16] Carreño JM, Alshammary H, Singh G, et al. Reduced neutralizing activity of post-SARS-CoV-2 vaccination serum against variants B. 1.617. 2, B. 1.351, B. 1.1. 7+E484K and a sub-variant of C. 37. medRxiv, 2021.
[17] Bates TA, Leier HC, Lyski ZL, et al. Neutralization of SARS-CoV-2 variants by convalescent and BNT162b2 vaccinated serum. Nat Commun, 2021; 12, 5135. doi:  10.1038/s41467-021-25479-6
[18] Sakiani S, Olsen NJ, Kovacs WJ. Gonadal steroids and humoral immunity. Nat Rev Endocrinol, 2013; 9, 56−62. doi:  10.1038/nrendo.2012.206
[19] Scully EP, Haverfield J, Ursin RL, et al. Considering how biological sex impacts immune responses and COVID-19 outcomes. Nat Rev Immunol, 2020; 20, 442−7. doi:  10.1038/s41577-020-0348-8
[20] Takahashi T, Ellingson MK, Wong P, et al. Sex differences in immune responses that underlie COVID-19 disease outcomes. Nature, 2020; 588, 315−20. doi:  10.1038/s41586-020-2700-3
[21] Lieberman NAP, Peddu V, Xie H, et al. In vivo antiviral host transcriptional response to SARS-CoV-2 by viral load, sex, and age. PLoS Biol, 2020; 18, e3000849. doi:  10.1371/journal.pbio.3000849