However, citizen scientists showed that only the Sputnik vaccine actually works, and two other Russian vaccines, Covivak and Epivak, have near-zero efficiency.
Can you link to the source for this? For some reason Google really wants me to find articles about Sputnik’s efficacy or safety concerns about the other two vaccines (lack of phase 3 trial), but not anything about their efficacies.
There were FB and telegram publications about covivak with similar finding: high morality rates, low level of antibodies. This is especially disappointing as many people waited for covivak, whole-virus)based vaccine as more traditional alternative to vector vaccine. See. eg here: https://www.facebook.com/khaltourina/posts/10226515400017272
Can you link to the source for this? For some reason Google really wants me to find articles about Sputnik’s efficacy or safety concerns about the other two vaccines (lack of phase 3 trial), but not anything about their efficacies.
Meduza.io did some research on epivac and find signs of corruption: controllers had a stake in production company, no antibodies found by independent tests, data was collected by e-mail and result were published in small Russian journal. You can start here and then check links below the article: https://meduza.io/news/2021/06/17/u-poloviny-dobrovoltsev-privivshihsya-epivakkoronoy-cherez-9-mesyatsev-ne-obnaruzhili-antitel-k-koronavirusu
There were FB and telegram publications about covivak with similar finding: high morality rates, low level of antibodies. This is especially disappointing as many people waited for covivak, whole-virus)based vaccine as more traditional alternative to vector vaccine. See. eg here: https://www.facebook.com/khaltourina/posts/10226515400017272