Why Omicron strains still a global concern - Chinadaily.com.cn - China Daily

Since its discovery six months ago, Omicron has been producing subvariants faster than scientists can name them. Omicron BA.4, BA.5 and BA.2.12.1 recently became the dominant strains in countries including South Africa, Portugal and the United States. In May,…

Since its discovery six months ago, Omicron has been producing subvariants faster than scientists can name them. Omicron BA.4, BA.5 and BA.2.12.1 recently became the dominant strains in countries inc… [+367 chars]

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