Are vaccine passports key to reopening economies?

Denmark has launched a programme to develop a "vaccine passport" for people inoculated against Covid-19, in an effort to pave the way for a reopening of businesses and travel. Sweden has also called for an international standard to recognise vaccinations. But the technology comes with challenges. Also in the show: the US labour market shows signs of steadying. Plus, unions protest planned job cuts at French pharmaceutical giant Sanofi.