A coronavirus vaccine developed by China's Sinovac was found to be 50,4% effective in Brazilian clinical trials, according to the latest results released by the researchers. From what we learn from the media, assessing that we struggle to read Chinese and give you official Beijing sources, this would be an inactivated vaccine. It works by using "killed" viral particles, therefore more "classic" as a vaccine.
The researchers, speaking of the effectiveness of this vaccine, mean the prevention of mild to severe cases, therefore it can be understood as an anti-Covid-19 vaccine.
Also on this vaccine we have some numbers, few but interesting:
- Chinese researchers claim 78% efficacy.
- Brazilian researchers claim 50,4% efficacy
- Turkish researchers report 91.25% effectiveness
- Indonesian researchers report 65,3% efficacy
There have been concerns and criticisms that Chinese vaccine trials are not subject to the same scrutiny and levels of transparency as its Western counterparts, for example Brazil had stopped the Chinese vaccine trial after a series of serious adverse reactions.