There is no 'zero risk' in easing travel restrictions, WHO says

In a long-awaited update to its guidance on travel, the United Nations global health agency said cross-border trips for emergencies, humanitarian work, the transfer of essential personnel and repatriation would constitute essential travel."There is no 'zero risk' when considering the potential importation or exportation of cases in the context of international travel," it said in the updated guidance posted on its website on Thursday.A surge of new infections in many parts of the world has promp