Germany's federal and regional governments agreed on Tuesday to take action to counter a fourth wave of Covid-19, including stepping up the vaccination campaign and restricting contact, especially for unvaccinated people. Facing a surge in cases over the last few weeks and warnings from virologists that exponential growth rates would overload hospitals, outgoing Chancellor Angela Merkel held video talks with her successor, Olaf Scholz, and regional leaders. FRANCE 24's Nick Spicer reports from Berlin.