The Centers for Disease Control and Prevention (CDC) https://www.cdc.gov/coronavirus/2019-ncov/index.html

Frequently Asked Questions and Answers: Coronavirus Disease-2019 (COVID-19) and Children:  https://www.cdc.gov/coronavirus/2019-ncov/

World Health Organization (WHO) https://www.who.int/emergencies/diseases/novel-coronavirus-2019/events-as-theyhappen

Travel guidance from the CDC:  https://www.cdc.gov/coronavirus/2019-ncov/travelers/index.html