COVID-19 vaccines developed by China's Sinovac. (Photo: CFP)

China's Sinovac Biotech had applied for conditional marketing authorization of its COVID-19 vaccine in the country on Wednesday, the company said Friday.

Data from a late-stage trial in Turkey showed the two-dose vaccine to be 91.25 percent effective, Sinovac said. In Brazil, the vaccine trial results showed a 50.65 percent efficacy, while it is 100 percent effective in preventing severe or death cases.