In a boost to global coronavirus vaccination hopes, a study has found that the Covid-19 vaccine spearheaded by Oxford University builds strong immunity to the virus. As the front-runner in the global race for a vaccine entered final Phase III clinical trials, researchers at Bristol University carried out tests to check whether it was behaving as intended. The Bristol team found that the vaccine was successfully able to instruct human cells to copy the genetic instructions to create the spike protein. The study confirmed that large amounts of the coronavirus spike protein are produced with great accuracy, and this goes a long way to explaining the success of the vaccine in inducing a strong immune response. Sarah Gilbert, who leads the Oxford University vaccine trial, praised the study for helping to explain the vaccine’s effectiveness.