Green pass' opens up travel in Europe

The challenge of vaccinating large swaths of the global population against COVID-19 continues, with the World Health Organisation again calling for first doses to be directed to poorer nations before third doses are given elsewhere. In a move intended to overcome vaccine hesitancy and limit the virus' spread more nations are imposing restrictions on the unvaccinated.

A traveller has her Green Pass checked at Bologna station, Italy Source: AAP