Zheng Zhongwei, an official with China's National Health Commission, said experimental COVID-19 vaccines developed by Chinese researchers are safe, and ongoing efforts to push for their market approval will strictly follow the rules of science, reported China Daily.
He noted that China is conducting Phase III clinical trials for five Chinese-made vaccine candidates overseas and has administered emergency inoculations to nearly 1 million people in the country.
"These vaccinations have fully demonstrated the safety of Chinese-made vaccines. There is some adverse reaction, but no severe adverse effect has been reported," he said.
Zheng added that while data from late-stage trials are needed to determine the efficacy, results from earlier phases of clinical testing and reports from recipients of emergency inoculations in high-risk countries have already shown the protective effects of these doses.
Three inactivated vaccines－two developed by Sinopharm and one by Sinovac－were among the first candidates in the world to begin Phase III trials, according to Zheng.
The fourth inactivated vaccine created by the Chinese Academy of Medical Sciences has recently passed ethical reviews in foreign countries and is about to begin the third-stage trial. Late-stage trials of the adenovirus vaccine in Russia, Pakistan and Mexico have enrolled over 20 000 people, and the recombinant protein vaccine is being tested in Uzbekistan, he said.
To read more NewsPoints articles, click here.