SinovacToday's WSJ is running an article on a Brazilian clinical study finding that the COVID-19 vaccine from Sinovac in China is almost 30 points less effective than origially claimed. A very good reason for continued development efforts behind new SARS2 vaccines. No way is this 'game over' with just two mRNA vaccines available.
Here is the link
https://www.wsj.com/articles/chinas-sinovac-covid-19-vaccine-is-50-4-in-late-stage-brazil-trials-11610470581?mod=latest_headlines