Sinopharm, J&J, Sputnik vaccines are weaker against Omicron, says report

The study also found that the lowest reduction in protective antibodies come from a combination of prior infection and two doses of Pfizer Inc.'s mRNA shots

Covid-19 shots made by China’s state-owned Sinopharm and Johnson & Johnson, as well as the Sputnik vaccine developed by Russia, were found to produce little or no antibodies against omicron in a study, as evidence of the new variant’s vaccine-evading abilities mount. 

Researchers at the University of Washington and Swiss drugmaker Humabs Biomed SA analyzed the efficacy of six vaccines against the highly-infectious and most-mutated Covid variant. Only three out of 13 people who has taken both doses of Sinopharm’s shot showed neutralizing antibodies against omicron. For J&J, this metric dropped to one out of 12 samples. None of the