With the Delta variant, if you had COVID before and are unvaccinated, you have a 2.34X greater chance of getting reinfected and the symptom may be worse.
With the Delta variant, if you had COVID before and are unvaccinated, you have a 2.34X greater chance of getting reinfected and the symptom may be worse.
你说的是打过疫苗,vs,得过covid 的各方面比较? 这个kentucky的study的finding是说: 得过covid 后再打疫苗 vs 得了不打的情况 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8360277/ Although laboratory evidence suggests that antibody responses following COVID-19 vaccination provide better neutralization of some circulating variants than does natural infection (1,2), few real-world epidemiologic studies exist to support the benefit of vaccination for previously infected persons. This report details the findings of a case-control evaluation of the association between vaccination and SARS-CoV-2 reinfection in Kentucky during May-June 2021 among persons previously infected with SARS-CoV-2 in 2020. Kentucky residents who were not vaccinated had 2.34 times the odds of reinfection compared with those who were fully vaccinated (odds ratio [OR] = 2.34; 95% confidence interval [CI] = 1.58-3.47). These findings suggest that among persons with previous SARS-CoV-2 infection, full vaccination provides additional protection against reinfection. To reduce their risk of infection, all eligible persons should be offered vaccination, even if they have been previously infected with SARS-CoV-2. 得了之后再打比不打还是有增强保护的
这个study的数据是: neutralizing ab percentage: covid+ baseline:21.8 after first dose: 99.9 after second dose: 99.9 control group (seropositive) baseline: 4.4 after first dose: 56.5 after second dose: 98.4
哪里看到过如果得过,不用再提供negative result proof 只需要医生出报告说恢复了。现在找不到了。
之前没变种的时候他们跟打六个月以内的疫苗差不了多少
现在有变种,而且疫苗打的时间快到6个月,他们防delta感染似乎要大幅反超了。。
前几天有个preprint...感觉他们保护力也wane但是wane得慢
反超是指保护作用还是感染? 谢谢
那个以色列preprint说的是各方面(感染,住院)反超
我刚刚有那么一刻是以为说的是感染后病患的自身抗体。谢谢解答疑问
得过新冠的S蛋白抗体是几百和灭活疫苗差不多,比mRNA和腺病毒》2500差十倍左右,当然得过新冠,疫苗第一次相当于第二针了,可以自己打完一针测下抗体再决定需不需要第二针
我们村里新冠病区的小样本,有几个进icu的都是第二次或者第三次得,第一次都是轻症,以为有抗体就没打疫苗。
hmmm 感觉你误解了他对你的误解
应该是他得了不止一次,自己不知道而已。
你说的是打过疫苗,vs,得过covid 的各方面比较?
这个kentucky的study的finding是说: 得过covid 后再打疫苗 vs 得了不打的情况
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8360277/
Although laboratory evidence suggests that antibody responses following COVID-19 vaccination provide better neutralization of some circulating variants than does natural infection (1,2), few real-world epidemiologic studies exist to support the benefit of vaccination for previously infected persons. This report details the findings of a case-control evaluation of the association between vaccination and SARS-CoV-2 reinfection in Kentucky during May-June 2021 among persons previously infected with SARS-CoV-2 in 2020. Kentucky residents who were not vaccinated had 2.34 times the odds of reinfection compared with those who were fully vaccinated (odds ratio [OR] = 2.34; 95% confidence interval [CI] = 1.58-3.47). These findings suggest that among persons with previous SARS-CoV-2 infection, full vaccination provides additional protection against reinfection. To reduce their risk of infection, all eligible persons should be offered vaccination, even if they have been previously infected with SARS-CoV-2.
得了之后再打比不打还是有增强保护的
得过了再打又能比得过了不打的增强一点(估计突破天际了)。
不过人家本来就是优等生了,还抓人家来补课。给他们打就相当于直接打booster
什么得了第二遍反应大的进icu的,跟基本道理相悖。
建议大家现在看paper之前,先拖到最后看conflict interest,拿了p家m家funding的最好别看了
得过以后比没得过的有多2.34倍的机率?那有抗体比没抗体的更糟糕了?
所以是不是在疫苗前所有人应该测一下有没有抗体?浓度多少?
比较的是得过covid之后,打了疫苗,和没打疫苗的
那个2.34是CDC做的,估计还是没变种的时候
你看13层那个link, Table 4b, 再打一针对症状感染额外的保护也有限 (OR 0.65)
当然如果是高危人群特别需要保护的,可以自己衡量
这个要看你怎么定义优等生,
https://www.thelancet.com/action/showPdf?pii=S2589-5370%2821%2900298-4
Comparison of IgG and neutralizing antibody responses after one or two doses of COVID-19 mRNA vaccine in previously infected and uninfected individuals.
这个study的数据是: neutralizing ab percentage:
covid+ baseline:21.8 after first dose: 99.9 after second dose: 99.9
control group (seropositive) baseline: 4.4 after first dose: 56.5 after second dose: 98.4
这是抗体,看你更重视抗体高度还是感染率了
谢谢link,的确现在delta是个很大的变数
是的,希望不要再往更糟糕的方向变种了。。。
其实都是概率。
打了多一层保护,得病的概率也减低了。
是,你比本人还清楚得了几次
现在的疫苗是专门针对delta的吗?