《ワクチン未接種者はオミクロン株よりも重症化しやすいデルタ株に感染しやすいことが判明〔Nature〕》

Nature 誌：
ワクチン未接種者またはワクチン1回接種者はオミクロン株よりもデルタ株に感染しやすく、
ワクチン接種者はデルタ株よりもオミクロン株に感染しやすい（3回接種者はこの傾向がより顕著となる）。
　
デルタ株は国内でまだ確認されている。ワクチン未接種者は注意が必要だろうね。

In a preprint posted on 25 January, the researchers reported that
infected people who either were unvaccinated or had received only one dose of a vaccine
were more likely to have Delta than Omicron.
But infected people who had received two vaccine doses had almost two times higher odds of having Omicron than Delta,
and those who had received three doses had three times higher odds of having Omicron.

NEWS
02 February 2022
How well can Omicron evade immunity from COVID vaccines?
New findings pinpoint the likelihood that people who get a breakthrough infection have Omicron rather than Delta.
https://www.nature.com/articles/d41586-022-00283-4