Recommending a third shot for those 16 and older. about six months after receiving your second dose. tonight, you'll see what their data shows. how much does the vaccine wane over time? moderna releasing its findings on a booster shot, too. so how would this work, if you got pfizer, a full shot for a booster, if you got moderna, a half shot. dr. jha is here tonight answering your questions. in the northeast at this hour, parts of pennsylvania, new york, up through new england and the severe thunderstorm watch. damaging winds possible. and of course the flash flood watches across four states ...