Dr Anthony Fauci cautioned that early COVID-19 vaccines are aimed at preventing symptoms during Yahoo Finance's All Markets Summit on Monday'If the vaccine allows you to prevent initial infection, that would be great,' he said. '[But] the primary endpoint [is] to prevent clinically recognizable disease' At least four vaccine candidates are currently in late-stage clinical trials Fauci has said he is cautiously optimistic that a vaccine will arrive by year endBut he warned that early vaccines may only be 50 to 60 percent effective
如果不能阻擋傳播，那得100%的人接種才行呼
2）接种疫苗组感染率是否低于对照组（不是发病率）
Dr Anthony Fauci cautioned that early COVID-19 vaccines are aimed at preventing symptoms during Yahoo Finance's All Markets Summit on Monday 'If the vaccine allows you to prevent initial infection, that would be great,' he said. '[But] the primary endpoint [is] to prevent clinically recognizable disease' At least four vaccine candidates are currently in late-stage clinical trials Fauci has said he is cautiously optimistic that a vaccine will arrive by year end But he warned that early vaccines may only be 50 to 60 percent effectiveFrom 辛迪16
阻断个体之间的传染，个体产生足够的中和抗体，病毒就不能繁殖，也就不能传给下一个人，mRNA疫苗已经产生了高于或等于得病之后产生的抗体，这就是初步证据。