Chinese study suggests using different Covid-19 vaccines for booster shots may be more effective than third dose of Sinovac

A booster shot of CanSino’s Covid-19 vaccine after two doses of Sinovac can induce a much stronger immune response than a third Sinovac shot, research suggests.The study, published on medRxiv.org and which has not been peer reviewed, comes as Beijing has offered booster shots for the elderly, high-risk groups and people travelling abroad but has not allowed the mixing of different types of vaccines.Zheng Zhongwei, director of the National Health Commission’s Development Centre for Medical…

Read the original article at South China Morning Post