European Union's medicines watchdog on Wednesday approved a second coronavirus vaccine, in a relief to struggling European countries as the world reached a grim new record of 15,700 deaths in 24 hours.The Moderna vaccine is now set to join Pfizer-BioNTech's jab for use in the 27-nation EU, where governments are grappling with soaring caseloads and slow rollouts of the vaccines already available.Also Read | The race to take fashion retail online"Good news for our efforts to bring more Covid-19 vaccines to Europeans!" European Commission chief Ursula von der Leyen tweeted.The breakthrough came as more than 15,700 Covid-19 deaths around the world were registered in the past 24 hours, according to a count by AFP at 1100 GMT on Wednesday -- a.