What's the deal with Chinese vaccines?

They're all over the world. But do they actually work?

Chinese companies are shipping their vaccines against COVID-19 around the world. But that doesn’t mean the recipients are using them:

Last month, a shipment of Sinovac coronavirus vaccines arrived without fanfare in Singapore from China.

Today, the vaccines sit unused in a storage facility. The wealthy city-state is moving ahead with Pfizer-BioNTech and Moderna for its coronavirus immunization program, with officials saying Sinovac needs to provide more data before they will consider rolling out its doses.

The case highlights the limitations of Beijing’s vaccine diplomacy. China’s lack of transparency in its clinical trials has hurt public confidence, even as national leaders from Indonesia to Sierra Leone have gotten the shots to rally their populations to do the same.

China’s coronavirus vaccine makers Sinovac and Sinopharm were among the earliest in the world to begin clinical trials last year. It remains unclear why they still have not published the data from the studies, even after …