China is considering injection of different Covid-19 vaccines to improve the relatively low efficiency of the vaccine produced in the country.

"Officials must consider how to solve the effectiveness of the efficiency ratio of unexpected vaccines", director of the Center for Control and Prevention of China Cao Phuc disease speech at the conference in Chengdu, province

Mr. Cao's speech marked the first time a leading Chinese specialist announced the relatively low efficiency of the country's vaccine, whether Beijing was ahead of the mass vaccination campaign and exported vaccines around the world.

According to him, another option to overcome the problem is to effectively use the doses of different technology applications.

The Vaccine Sinopharm is produced by China at a vaccination point in Colombo on April 6 after the Chinese government donated to citizens abroad.

Mr. Cao said that she should not just have a domestic vaccine that ignores MRNA technology vaccines (genetic information).

China has approved 4 types of Vaccine Covid-19, but the effect is still behind Pfizer-BionTech and Modernna rivals, two vaccines with a rate of 95% and 94% respectively.

Earlier, China Sinovac said Brazilian trials showed an effective about 50% in infection prevention and 80% in preventing medical intervention cases.

China has injected about 161 million nases since the beginning of last year's vaccination campaign.

Mr. Cao ever stressed the best way to prevent Covid-19 from spreading to vaccination.

British scientists in February began testing the Covid-19 vaccine of both Pfizer and Astrazeneca to quickly prevent viral variations that are spreading strongly.

This is the first time scientists try to combine two vaccines prepared by different methods.