An alliance of world leaders is holding a virtual summit Monday hoping to drum up billions of dollars to fund research into a vaccine for the new coronavirus as well as develop better treatments and more efficient testing. People in many countries across the globe, and notably in Europe this week, are cautiously returning to work, but authorities remain wary of a second wave of infections, and a vaccine is the only real silver bullet to allow something like normal life to resume. The video-conference’s aim is to gather around 4 billion euros ($4.37 billion) for vaccine research, some 2 billion euros for treatments and 1.5 billion ($1.64 billion) for testing. Officials say that amount is just the start, as much more will be needed in the months ahead to scale up production and distribution. In a statement ahead of the meeting, the leaders of France, Germany, Italy, Norway and top European Union officials said that the money raised will be channeled mostly through recognized global health organizations. No new structure would be set up to handle the funds raised.