us presidential contenderjoe biden has made his first public remarks on a claim of sexual assault nearlyyears ago, saying the alleged incident never happened. the claim surfaced in a podcast made by a former aide in march. canada has banned 1,500 types of military—like assault weapons with immediate effect. the move comes after the country's worst mass shooting in nova scotia last month, which left 22 people dead. now on bbc news, annita mcveigh has more information and health advice on the coronavirus outbreak, in this special programme, coronavirus: what you need to know. hello, and welcome to the latest in our special programmes on what you need to know about the coronavirus. i'm annita mcveigh. it's estimated that nearly half of the world's workers could lose their livelihoods because of this pandemic. that's according to the international labour organisation, who say informal workers have already been worst affected. the bbc population reporter, stephanie haggerty, spoke with people in four different countries who used to get by on a daily wage, but since lockdown, are struggling ju