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
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