[1]https://apps.who.int/iris/bitstream/handle/10665/351761/WHO-2019-nCoV-Surveillance-Guidance-2022.1-chi.pdf

[2]https://cj.sina.com.cn/articles/view/5272985612/m13a4b600c033010bzw

[3]https://news.bjd.com.cn/2022/12/11/10260565.shtml

[4]https://zj.zjol.com.cn/news.html?id=1973686

[5] Abu-Raddad LJ, Chemaitelly H, Bertollini R; National Study Group for COVID-19 Epidemiology. Severity of SARS-CoV-2 Reinfections as Compared with Primary Infections. N Engl J Med. 2021 Dec 23;385(26):2487-2489. doi: 10.1056/NEJMc2108120. Epub 2021 Nov 24. PMID: 34818474; PMCID: PMC8631440.

[6]Wu S, Li Y, Mishra S, Bodner K, Baral S, Kwong JC, Wei X. Effect of the incremental protection of previous infection against Omicron infection among individuals with a hybrid of infection- and vaccine-induced immunity: a population-based cohort study in Canada. Int J Infect Dis. 2022 Nov 28:S1201-9712(22)00620-8. doi: 10.1016/j.ijid.2022.11.028. Epub ahead of print. PMID: 36455812.

[7]国务院联防联控机制关于重点人群健康管理新闻发布会https://new.qq.com/rain/a/20221213A0753700.html

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