China considers mixing Covid-19 vaccines to increase efficacy

China's top disease control officials have suggested that the country is considering mixing the available vaccines to further boost their efficacy.  

Gao Fu, director of the Chinese Centre for Disease Control and Protection said that the currently available vaccines do not have very high rates of protection and added that inoculation using vaccines of different technical lines is being considered. 

He further said that another option that the officials are exploring is about taking steps to optimize the vaccine process by increasing the number of doses and changing the interval between the doses of the vaccines. 

China has developed 4 domestic vaccines that are being currently used for public use. While the Brazilian clinical trials reveals Sinovac's efficacy data slightly above 50%, no detailed efficacy data have been released about the 2 other vaccines developed by Sinopharm.