1,2,3; Isabel Griffin, PhD1,2,4; Andre Berro, MPH1,2; Nicole J. Cohen, MD1,2; Kimberly Singler, DrPH1,2; Yoni Haber, MBA1,2; Chris de la Motte Hurst, MPH1,2; Amber Stolp, MPAff1,2; Sukhshant Atti, MD1; Leslie Hausman, MPH1,2; Caitlin E.
Shockey, JD1,2; Shahrokh Roohi, MPH1,2; Clive M. Brown, MBBS1,2; Lisa D. Rotz, MD1,2; Martin S. Cetron, MD1,2; CDC COVID-19 Port of Entry Team; Francisco Alvarado-Ramy, MD1,2 (View author affiliations)As an early effort to prevent importation of SARS-CoV-2, CDC established entry screening at designated airports for passengers from certain countries.Passenger entry screening was resource-intensive with low yield of laboratory-diagnosed COVID-19 cases (one case per 85,000 travelers screened).