The Centers for Disease Control and Prevention (CDC) https://www.cdc.gov/
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/
New York State Department of Health (NYSDOH) https://www.health.ny.gov/
Travel guidance from the CDC: https://www.cdc.gov/