“In a country where the Chinese vaccine is the only one available, you either accept it or not,” said Yanzhong Huang, a senior fellow for global health at the New York-based Council on Foreign Relations. “But when you have choices between different vaccines, people are rational. They’re certainly going to choose Western-made vaccines because they’re the No. 1 choice, the data is already available, and they’re safe. China, so far, they haven’t had any systematic data available.”
CNBG and CanSino didn't respond to Bloomberg’s requests for comment. A spokesman at Sinovac referred to recent press conferences in Beijing where health officials said the inactivated shots undergoing phase III trials and approved for emergency use have been found to be safe, with only mild side effects, and that there is a mechanism in place to follow up with those who get the shots. A Sinovac spokesman separately said the company could only disclose efficacy data after they are reviewed by Chinese regulators.