Veronica Diaz, 48, of Detroit stands by as her son Javier Belmares, 14, becomes nervous as he prepares to get his first Pfizer COVID vaccine shot by Medical Assistant Stephanie Yang during a vaccine clinic at Ideal Group in southwest Detroit on Thursday, May 13, 2021. School districts from California to Michigan are offering free prom tickets and deploying mobile vaccination teams to schools to inoculate students 12 and up so everyone can return to classrooms in the fall. They are also enlisting students who have gotten shots to press their friends to do the same. (Ryan Garza/Detroit Free Press via AP)

Indira Cisneron holds her son German Vazquez, right, while waiting to get her first vaccination shot with her other son Gabriel Vasquez, center, 13, in southwest Detroit on Thursday, May 13, 2021. School districts from California to Michigan are offering free prom tickets and deploying mobile vaccination teams to schools to inoculate students 12 and up so everyone can return to classrooms in the fall. They are also enlisting students who have gotten shots to press their friends to do the same. (Ryan Garza/Detroit Free Press via AP)