TY - JOUR T1 - States in Brief JF - The Nation's Health JO - Nations Health SP - 13 LP - 13 VL - 50 IS - 8 AU - Kim Krisberg Y1 - 2020/10/01 UR - http://www.thenationshealth.org/content/50/8/13.2.abstract N2 - Virginia became the first state to debut an official app that notifies users if they have been exposed to someone with COVID-19. ER -