Respiratory disease expert Zhong Nanshan said Covid-19 vaccines were less effective six months after the first dose, but herd immunity was still achievable with booster shots. Photo: Handout
Respiratory disease expert Zhong Nanshan said Covid-19 vaccines were less effective six months after the first dose, but herd immunity was still achievable with booster shots. Photo: Handout

China could reach herd immunity against Covid-19 by end of year, Zhong Nanshan says

  • Leading respiratory disease expert says more than 80 per cent of the population is expected to be fully vaccinated by then
  • Zhong says booster shots could strengthen efficacy of vaccines, citing follow-up study on early stage Sinovac trials

Topic |   Coronavirus China
Respiratory disease expert Zhong Nanshan said Covid-19 vaccines were less effective six months after the first dose, but herd immunity was still achievable with booster shots. Photo: Handout
Respiratory disease expert Zhong Nanshan said Covid-19 vaccines were less effective six months after the first dose, but herd immunity was still achievable with booster shots. Photo: Handout
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