Most had no history of mental illness and became psychotic weeks after contracting the virus. Cases are expected to remain rare but are being reported worldwide.

And what else you need to know today.

During a year with limited travel possibilities, our World Through a Lens series offered Times readers a weekly escape. Here are some of the highlights.

Zhang Zhan, a former lawyer, is the first known person to be tried for challenging the Chinese government’s narrative about the coronavirus pandemic.

The architect Stefano Boeri has designed primrose-themed pavilions where coronavirus shots will be given, but not everybody is thrilled with the idea.

The start of Europe’s vaccination campaign.

Vaccines roll out across Europe.