CNN reports that on May 10 the U.S. Food and Drug Administration expanded the emergency use authorization for Pfizer's COVID-19 vaccine to include anyone aged 12 to 15-years-old. Shots could start being given to young people Thursday, after the U.S. Centers for Disease Control and Prevention's Advisory Committee on Immunization Practices meets May 12 on whether to recommend use of the vaccine in this age group. The FDA reviewed a clinical trial from Pfizer involving 2,260 12-to-15-year-olds that showed the vaccine's efficacy is 100 percent. The Pfizer vaccine had previously been authorized for people age 16 and older, while the Moderna and Johnson & Johnson vaccines are only being given to those 18 and older. Read more about this story at the CNN website.