What is herd immunity and how does it work? What is herd immunity and how does it work? By CGTN - 16 March 2020 Herd immunity, also known as community immunity, occurs when a sufficient portion of a population is immune to a specific disease (usually through vaccination and/or prior illness), so that it can make the spread from person to person unlikely.
Famous actress Cecilia Yip performs in the stage play 'King Lear' in England Art Famous actress Cecilia Yip performs in the stage play 'King Lear' in England By Melina Rauter
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Chinese president's upcoming visit to bring new hope to Serbia's development: Vucic News Chinese president's upcoming visit to bring new hope to Serbia's development: Vucic By Xinhua
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Themed show showcases costumes from archaeological sites in Beijing News Themed show showcases costumes from archaeological sites in Beijing By Ecns.cn