I take this story to be a sign that the risk of Antibody-Dependent Enhancement (ADE) of SARS-COV-2 infection is now officially recognized.
ADE is a phenomenon in which vaccinated people become more prone to harmful effects of new virus variants such that they are more likely to be harmed than unvaccinated people. ADE was not found to occur in the clinical trials for the current Covid vaccines prior to their public rollout, but the potential was well established.
If public health officials have solid evidence of ADE, how would they message it? Surely not by telling the vaccinated they face new Covid dangers they did not expect.