![\"A](\"https:\/\/image.cnbcfm.com\/api\/v1\/image\/106866611-1618204779569-gettyimages-1311630693-vcg111324823090.jpeg?v=1618204862&w=740&h=416\")
<\/picture><\/div>\n<\/div>\n<\/div>\nA medical worker receives the Covid-19 vaccine at the First Affiliated Hospital of Sun Yat-sen University on April 7, 2021 in Guangzhou, Guangdong Province of China. Southern Visual | Visual China Group | Getty Images<\/h5>\n<\/div>\n<\/div>\n<\/div>\n\nIn a rare admission of the weakness of Chinese coronavirus vaccines, the country\u2019s top disease control official says their effectiveness is low and the government is considering mixing them to get a boost.<\/p>\n
Chinese vaccines \u201cdon\u2019t have very high protection rates,\u201d said the director of the China Centers for Disease Control, Gao Fu, at a conference Saturday in the southwestern city of Chengdu.<\/p>\n
Beijing has distributed hundreds of millions of doses abroad while trying to promote doubt about the effectiveness of the\u00a0Pfizer<\/a>–BioNTech<\/a>\u00a0vaccine made using the previously experimental messenger RNA, or mRNA, process.<\/p>\n\u201cIt\u2019s now under formal consideration whether we should use different vaccines from different technical lines for the immunization process,\u201d Gao said.<\/p>\n
Officials at a news conference Sunday didn\u2019t respond directly to questions about Gao\u2019s comment or possible changes in official plans. But another CDC official said developers are working on mRNA-based vaccines.<\/p>\n
Gao did not respond to a phone call requesting further comment.<\/p>\n
\u201cThe mRNA vaccines developed in our country have also entered the clinical trial stage,\u201d said the official, Wang Huaqing. He gave no timeline for possible use.<\/p>\n
In a rare admission of the weakness of Chinese coronavirus vaccines, the country\u2019s top disease control official says their effectiveness is low and the government is considering mixing them to get a boost.<\/p>\n
Chinese vaccines \u201cdon\u2019t have very high protection rates,\u201d said the director of the China Centers for Disease Control, Gao Fu, at a conference Saturday in the southwestern city of Chengdu.<\/p>\n
Beijing has distributed hundreds of millions of doses abroad while trying to promote doubt about the effectiveness of the\u00a0Pfizer<\/a>–BioNTech<\/a>\u00a0vaccine made using the previously experimental messenger RNA, or mRNA, process.<\/p>\n \u201cIt\u2019s now under formal consideration whether we should use different vaccines from different technical lines for the immunization process,\u201d Gao said.<\/p>\n Officials at a news conference Sunday didn\u2019t respond directly to questions about Gao\u2019s comment or possible changes in official plans. But another CDC official said developers are working on mRNA-based vaccines.<\/p>\n Gao did not respond to a phone call requesting further comment.<\/p>\n \u201cThe mRNA vaccines developed in our country have also entered the clinical trial stage,\u201d said the official, Wang Huaqing. He gave no timeline for possible use.<\/p>\n
![\"Gao](\"https:\/\/image.cnbcfm.com\/api\/v1\/image\/106866567-1618192988013-gettyimages-1308200928-vcg111322165808.jpeg?v=1618192683&w=740&h=416\")
<\/picture><\/div>\n<\/div>\n<\/div>\n