Global herd immunity against COVID-19 via vaccination might take 2-3 years: expert
2021-05-13 CGTN Editor:Wang Yifan
The world might need two to three years to reach herd immunity against COVID-19 through vaccination, China's top respiratory expert Zhong Nanshan said on Thursday at the Science Council of Asia Conference in south China's Guangzhou City.
He added that it will only be attainable with global cooperation.