A total of 10,262 SARS-CoV-2 vaccine breakthrough infections had been reported from 46 U.S. states and territories as of April 30, 2021 那你看1月到4月的数据嘛，那时候还是全报的。
CDC自己说的，这个数字很可能是substantial undercount the number of reported breakthrough infections was probably a “substantial undercount” because the national surveillance system relies on passive and voluntary reporting
CDC自己说的，这个数字很可能是substantial undercount the number of reported breakthrough infections was probably a “substantial undercount” because the national surveillance system relies on passive and voluntary reporting ljmdtc 发表于 2021-05-25 18:59
based on preliminary data, 2,725 (27%) vaccine breakthrough infections were asymptomatic, 995 (10%) patients were known to be hospitalized, and 160 (2%) patients died. Among the 995 hospitalized patients, 289 (29%) were asymptomatic or hospitalized for a reason unrelated to COVID-19. The median age of patients who died was 82 years (interquartile range = 71–89 years); 28 (18%) decedents were asymptomatic or died from a cause unrelated to COVID-19. 遗憾的是sequencing的data很少，不好分辨那种变种更加virulent
所以，这个感染率对华人社区 还不够理想，大部分华人还会小心翼翼的生活！对其它族群，估计这足够好了！
CDC 现在只identify hospitalized or fatal vaccine breakthrough cases, 这个万分之一就是自欺欺人。
https://www.cdc.gov/vaccines/covid-19/health-departments/breakthrough-cases.html
感染了就只是轻症或者无症状、不用住院，满足了。
A total of 10,262 SARS-CoV-2 vaccine breakthrough infections had been reported from 46 U.S. states and territories as of April 30, 2021
那你看1月到4月的数据嘛，那时候还是全报的。
实战数据因为变量太多，不可能完整客观的反映问题。但是不能说是自欺欺人。
breakthrough的数据确实不能反应真实的感染率（其实没打疫苗人如果无症状同样不会去检测）。但是，这么多打疫苗的人里面只有353个死亡，比不打疫苗的人一天死的都少一半。如果假设打完疫苗的死亡率是一样的，说明疫苗也大大降低了感染率。如果没降低感染率，说明大大降低了重症率和死亡率。无论怎么解释，疫苗的作用都是很明显的。
啊？那个比赛有一万人参赛？
不住院就可以了， 谁每年还不得几次不住院的感冒 ？
万分之一，基本正确，不是自欺欺人，因为死亡率是百万分之一，而且是从打疫苗以来的总共累计，不是每天。
the number of reported breakthrough infections was probably a “substantial undercount” because the national surveillance system relies on passive and voluntary reporting
太好了
住院人数统计上误差不会很大的，死亡人数误差应该更小，而其它的打了疫苗以后轻症的人，误差再大又咋样了？不需要住院的新冠病人并不比普通感冒更恐怖，当然对于不打疫苗的人可能还是个问题。
https://www.cdc.gov/mmwr/volumes/70/wr/mm7021e3.htm?s_cid=mm7021e3_w
楼主说的是今天CDC MMWR的report，27% 是aymptomatic
遗憾的是sequencing的data很少，不好分辨那种变种更加virulent
完成COVID疫苗的1亿人，1万生病，1000住院，160死亡。
嗯，不知道就怕万一的人们从前是怎么度过流感季的？
我看了你的link， 这是指在 已经 break 的家中人群的住院率，和我说的不是一回事吧，这比没疫苗前都高，没疫苗前 大概接近10%，
另外，我觉得打了疫苗还被感染，估计就是敏感体体制，比较不幸！