The CoronaVac vaccine developed by Sinovac, a private company, was found to have an efficacy rate of just 50.4% in clinical trials in Brazil. Another trial in Turkey showed it was 83.5% effective. State-owned Sinopharm said its two vaccines have efficacy rates of 79.4% and 72.5%.
In comparison, the Pfizer-BioNTech and Moderna vaccines have efficacy rates of 97% and 94%, respectively.
In March, the United Arab Emirates started offering
a third dose of a Sinopharm vaccine to residents who failed to generate sufficient antibodies after two shots.
We are hoping the Chinese will publish their data in a peer reviewed journal so that we can exposure to their Immunogenocity data. Based on what’s known so far, it appears that Antibody Titers comes down within 90 days
Read more: https://www.cnn.com/2021/04/12/china/china-vaccine-efficacy-intl-hnk/index.html
