The number of coronavirus cases in the US caused by the UK variant is rising, and researchers said Wednesday that the UK variant is between 30 percent and 100 percent more deadly than other variants as drugmakers seek all-in-one COVID-19 vaccines to target it and other variants.

BRUSSELS -- The European Union (EU) will receive an additional four million doses of BioNTech-Pfizer COVID-19 vaccine by the end of March to address the need in virus hotspots, the European Commission announced on Wednesday.

(CNN)Like everyone else in medicine and public health, we have been closely following the news about the novel variants of SARS-CoV-2 -- the virus that causes Covid-19. first identified in the United Kingdom last fall -- matters to public health.

By Du Juan | chinadaily.com.cn