The Top disease control official of China confesses that their vaccine’s efficiency is low. He also mentions that, “the government is considering mixing them to give them a boost.”

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Gao Fu, director of the China Centers for Disease Control, attended the conference on Saturday. At south-western city of Chengdu, he said that,”Chinese vaccines “don’t have very high protection rates.”

Brazil Researcher said that Chinese vaccine efficiency is as low as 50.4%.

He adds that “It’s now under formal consideration whether we should use different vaccines from different technical lines for the immunization process.”

Mr. Gao gave no details of possible changes in strategy but mentioned mRNA, a previously experimental technique used by Western vaccine developers while China’s drug makers used traditional technology.

“Everyone should consider the benefits mRNA vaccines can bring for humanity,” Mr. Gao said. “We must follow it carefully and not ignore it just because we already have several types of vaccines already.”

Mr. Gao previously raised questions about the safety of mRNA vaccines. He was quoted by the official Xinhua News Agency 

as saying in December he couldn’t rule out negative side effects because they were being used for the first time on healthy people.

Chinese state media and popular health and science blogs also have questioned the safety and effectiveness of the Pfizer vaccine, which uses mRNA.

As of April 2, some 34 million people have received both of the two doses required by Chinese vaccines and about 65 million received one, according to Mr. Gao.

Experts say mixing vaccines, or sequential immunization, might boost effectiveness rates. Trials around the world are looking at mixing of vaccines or giving a booster shot after a longer time period. Researchers in Britain are studying a possible combination of Pfizer and AstraZeneca vaccines.

Source: The Hindu

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