News > COVID vaccine efficacy wanes, but jabs offer protection: Study

COVID vaccine efficacy wanes, but jabs offer protection: Study

The efficacy of two widely used coronavirus vaccines against the Delta variant weakens within three months of inoculation, but the jabs remain the most effective way to ensure protection against the strain, Oxford University researchers have found.

“Both of these vaccines, at two doses, are still doing really well against Delta … When you start very, very high, you got a long way to go,” said Sarah Walker, an Oxford University professor of medical statistics and the survey’s chief investigator.