A member of a federal vaccine advisory panel said Thursday that the United States should be holding mass COVID-19 vaccination events to get more people vaccinated, amid concerns vaccinations aren’t happening quickly enough. While billions of dollars from the government helped produce vaccines in record time, the vaccination part “is equally hard and is equally going to require this Manhattan Project-like response,” Dr. Paul Offit said. “We need to do essentially the kind of things we’re doing in our hospital. In our hospital, we’ve vaccinated 12 people every 30 minutes. And so we will plow through tens of thousands of people by having a very efficient system,” he added. “And that’s what has to happen across this country where you have mass vaccination campaigns for all these different groups. Initially, healthcare workers, but then, people who are teachers and people who are working in utilities or mass transit and just …