The National Institutes of Health (NIH) Environmental influences on Child Health Outcomes (ECHO) COVID-19 Task Force led the development of the ECHO COVID-19 questionnaires. The Task Force, co-chaired by ECHO investigators Tracy Bastain, PhD, and Carrie Breton, PhD, of the Keck School of Medicine at the University of Southern California, and comprised of 21 additional cohort investigators, as well as representatives from the ECHO NIH Program Office, Coordinating Center (CC), Data Analysis Center (DAC), and Person-Reported Outcome (PRO) Core, developed questionnaires for pregnant women and caregivers, children ages 0 to 12 years old (via parent report), and adolescents ages 13 years and older (via self-report). The purpose of these questionnaires is to assess the impact of being infected with and living during the time of the COVID-19 outbreak. Questionnaire content includes original items developed by the Task Force, as well as modified items from existing surveys and source materials listed in the access notes.