Sputnik V vaccine is no match for a fast-spreading variant such a Covid-19, says an article on Nature.
Ineffective against SARS-CoV-2Many vaccines — including Sputnik V, developed by the Gamelaya National Centre for Epidemiology and Microbiology in Moscow — trigger the production of antibodies targeting the SARS-CoV-2 protein called spike, which the virus uses to infect host cells. Scientists worry that the vaccines might be ineffective against SARS-CoV-2 variants with mutations in the...
https://mfame.guru/sputnik-v-vaccine-ineffective-for-covid-19/