倫敦帝國理工關於Omicron再感染的文章，自然免疫對Omicron防再感染的有效率為19%。

還有，沒有證據表明Omicron的嚴重程度低於Delta。

還需要更多的數據。

To put this into context, in the pre-Omicron era, the UK “SIREN” study of COVID infection in healthcare workers estimated that prior infection afforded 85% protection against a second COVID infection over 6 months. The reinfection risk estimated in the current study suggests this protection has  fallen to 19% (95%CI: 0-27%) against an Omicron infection.

The study finds no evidence of Omicron having lower severity than Delta, judged by either the proportion of people testing positive who report symptoms, or by the proportion of cases seeking hospital care after infection. However, hospitalisation data remains very limited at this time.

原文鏈接：https://www.imperial.ac.uk/news/232698/omicron-largely-evades-immunity-from-past/

 

來源: solo1 於 2021-12-28 17:35:52