BEIJING, Feb. 9 (Xinhua) — No novel COVID-19 variants were found in Beijing weeks after China optimized its epidemic response in November, according to a recent study.Researchers from the Chinese Aca
Enjoy life, Inspiring work
Enjoy life, Inspiring work
BEIJING, Feb. 9 (Xinhua) — No novel COVID-19 variants were found in Beijing weeks after China optimized its epidemic response in November, according to a recent study.Researchers from the Chinese Aca