这里有一点去年感染新冠病毒后今年五六月份再次感染的证据。数据很小，可能不具代表性。

The research determined that unvaccinated Kentucky residents who had a confirmed coronavirus infection last year had a "significantly higher likelihood of reinfection" than those considered fully vaccinated. The study concluded that the unvaccinated were 2.34 times more likely to contract COVID-19 again.

The study involved 246 Kentucky residents who were reinfected in May and June this year after having a confirmed 2020 case. They were compared to 492 controls who had a 2020 infection but were not reinfected.

https://www.google.com/amp/s/thehill.com/policy/healthcare/566799-overnight-health-care-study-finds-unvaccinated-more-than-twice-as-likely-to%3famp

所有跟帖： 

• 赞 狼医分享 求真求实，不以观念站队。谢谢 -SAR- ♂ (0 bytes) () 08/11/2021 postreply 05:08:46

• 谢谢。也觉得务求客观，少些主观臆断比较好。遗憾的是Data 不多，很多结论现在认为是正确的，以后也不一定就会正确。 -饿狼陀- ♀ (0 bytes) () 08/11/2021 postreply 09:57:07