Quora: How could the Chinese develop such an efficient COVID-19 vaccine?

Bill Williams, Social Scientist, Researcher, Author replied.

I googled about the Chinese vaccine. Tons of articles about Brazil reported 50% effectiveness on Chinese vaccines.

Our western media did not tell you the whole truth. 50% effectiveness was only reported by Brazil because the President of Brazil is pro-Trump. The rest of the 18 nations tested the Chinese vaccine and declared the effectiveness to be 80% on the average.

Our western propaganda media rushed to publish this fake information without validation and it spread like wildfire.

The latest was: their scientists corrected their president to announce that the effectiveness to 78 percent and eventually the President of Brazil bought 100 million doses from China. Please update your information.