It's likely that we will need to get a booster shot for our COVID-19 vaccine at some point, but lots of questions still remain. When will the shot be needed? Why do we need it? Does everyone need one? We don't have the answer to all these questions yet, due to time, but there are some things we know for sure. Head over to The New York Times to learn what scientists know about COVID-19 boosters, and what we can expect moving forward.