China Admits Its Covid Vaccine Efficacy 'Not High'; Country Considers Mixing Vaccines To Boost Effectiveness

China Admits Its Covid Vaccine Efficacy 'Not High'; Country Considers Mixing Vaccines To Boost Effectiveness

source https://news.abplive.com/news/world/mixing-vaccines-can-be-a-way-to-increase-the-efficacy-says-top-health-official-in-china-1452710