The Food and Drug Administration and the Centers for Disease Control and Prevention have now authorized COVID-19 boosters for people who received the Moderna and Johnson & Johnson vaccines. (The agencies authorized the Pfizer booster about a month earlier.) That means boosters are available to a much broader range of individuals, and that the types of vaccines people can get are more diverse. Who is eligible to receive boosters? And which ones? Here’s what you need to know. To read the full story.