Covid-19 vaccine will still work against the variant.The study found the vaccine was still able to neutralise the killer virus and there is not yet evidence from trials in people that the variant reduces vaccine protection, the firms stated.Still, they are making investments and talking to regulators about developing an updated version of their mRNA vaccine or a booster shot, if needed.For the study, scientists from the companies and the University of Texas Medical Branch (UTMB) developed an engineered virus that contained the same mutations carried on the spike portion of the highly contagious coronavirus variant first discovered in South Africa, known as B.1.351.