New research shows COVID-19 may have been in L.A. before China announces its outbreak - Chinadaily.com.cn

Researchers at the University of California, Los Angeles (UCLA), evaluated more than 10 million patient and health records for UCLA Health outpatient, emergency department and hospital facilities, spanning Dec. 1, 2019, to Feb. 29, 2020, and compared those records with data from the same period over the previous five years.