For the curious.
Register
Edit Account-Sign Out
My AccountSign Out
NationalWorldTV

Invitations

<p>The study is part-funded by government, industry and charities </p>

News New health study calls for 5m UK adults to take part

<p>It is normal to experience some side effects after your booster vaccine (Photo: Getty Images)</p>

Coronavirus Side effects of Covid booster jab as people urged to book third dose