With the November election fewer than four months away and the number of coronavirus cases again surging in the United States, former vice president Joe Biden is preparing for a range of realities when it comes to dealing with the virus if he is elected president, according to an official. "I would say the vice president and the team are working through multiple scenarios. One of those scenarios would involve the existence of a vaccine, in which case, one of the biggest tasks would be the broad-based manufacture and equitable distribution of that vaccine which is an enormous logistical challenge,"...