Will France's new measures be effective in combating the wave of Coronavirus?

French President Emmanuel Macron announced mandatory Covid-19 vaccinations for health staff on Monday as well as a tightening of restrictions to fight a recent surge in cases linked to the Delta variant. From August, anyone wanting to go out to eat or drink, visit a shopping centre or attend a festival, theatre show or cinema screening will need to show either proof of vaccination or a negative test. Director of UCL Genetics Institute in Geneva, François Balloux answers.