NEWARK, NJ – AUGUST 28: Nurse Julie Ahn checks the arm of Aaliyah Clark,4, after she received an immunization shot
at the city of Newark’s “School Bus Express” free immunization program for Newark youth on August 28, 2013 in Newark, New Jersey. The program is being held at the Department of Child and Family Well-Being and seeks to highlight the importance of childhood immunizations before the school year gets started. Newark, where some 30% of residents live in poverty, provides immunizations for all residents. (Photo by Spencer Platt/Getty Images)