In retrospective studies of transmission of SARS-CoV-2 from China, the household secondary attack rate among pediatric contacts has ranged from 4 to 7 percent. In a review of cases from New York state (excluding New York City), the secondary attack rate among children <18 years was 27 percent. In utero and peripartum transmission and transmission through breast milk or during infant feeding. Cases of possible transmission from teachers or school staff to students and among students in the school setting have also been reported