The omicron variant of the SARS-CoV-2 virus, discovered just a few weeks ago, is poised to dominate Covid-19 cases around the world. It’s a stunning new twist to the pandemic saga that has countries scrambling to prepare. In places like South Africa and the United Kingdom where omicron has been spreading fast, Covid-19 cases have doubled every three days or less. This includes people who were previously infected or vaccinated against Covid-19.
精彩评论