If you’re fully vaccinated, there’s no indication you need a booster yet. But many could urgently use that dose — here’s why. — Last week, the pharmaceutical giant Pfizer held a closed-door meeting with senior U.S. health officials to pitch them on Covid-19 booster shots. Just a few days prior, Pfizer announced they would ask the FDA to expand the emergency authorization for their current two-dose vaccine to include a third, a booster…