Russian Covid vaccine Sputnik V claimed to be 95 percent effective

According to the protocol of Phase III clinical trials of the Sputnik V vaccine, its interim efficacy is calculated at three statistically significant representative control points -- upon reaching 20, 39 and 78 cases of novel coronavirus infection among volunteers both in the placebo group and in the group that received the vaccine.

The second interim analysis of the Sputnik V vaccine efficacy was carried out on the basis of 39 confirmed cases identified in the placebo group (31 cases) and in the vaccine group (8 cases).

The Russian vaccine uses two different vectors based on the human adenovirus, rather than using one and the same vector for two doses.

The next interim data analysis will be conducted upon reaching the third control point of 78 confirmed coronavirus cases among the study participants.

Final data analysis will be available by the end of Phase 3 clinical trials involving 40,000 volunteers.

Drug maker AstraZeneca on Monday said that its Covid-19 vaccine, developed with Oxford University, was up to 90 percent effective, making it one of the major drug companies after Pfizer and Moderna to have reported late-stage data for a potential Covid-19 vaccine.

Also Read: Sputnik V To Cost Less Than Pfizer, Moderna Covid Vaccine, Claims Russia