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January 13, 2021 03:25 pm

Disappointing Chinese Vaccine Results Pose Setback for Developing World

Scientists in Brazil have downgraded the efficacy of a Chinese coronavirus vaccine that they hailed as a major triumph last week, diminishing hopes for a shot that could be quickly produced and easily distributed to help the developing world. From a report: Officials at the Butantan Institute in Sao Paulo said on Tuesday that a trial conducted in Brazil showed that the CoronaVac vaccine, manufactured by the Beijing-based company Sinovac, had an efficacy rate just over 50 percent. That rate, slightly above the benchmark that the World Health Organization has said would make a vaccine effective for general use, was far below the 78 percent level announced last week. The implications could be significant for a vaccine that is crucial to China's global health diplomacy. At least 10 countries have ordered more than 380 million doses of the Sinovac inoculation, CoronaVac, though regulatory agencies have yet to fully approve it. A senior official in Hong Kong, a special administrative region of China that had already ordered CoronaVac, said on Wednesday that an advisory panel would strictly review the vaccine based on clinical trial data before it was rolled out there. "Those countries that have ordered the Chinese-made vaccines are probably going to question the usefulness of these vaccines," said Yanzhong Huang, a senior fellow for global health at the Council on Foreign Relations and an expert on health care in China. "Countries with opposition parties might use this to challenge the decision made by the incumbent government, and that will likely have domestic political implications in these countries," Mr. Huang said. Sinovac did not respond to multiple requests for comment.

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