WHO、コロナ変異種は英含む6カ国に　「ワクチン有効」

WHO、コロナ変異種は英含む6カ国に　「ワクチン有効」
https://www.nikkei.com/article/DGXZQOGR2203D022122020000000

last-modified: 2020-12-24 01:07:58