Researchers say COVID-19 could have been in U.S. back in December 2019 based on data

©   | Portions are ©  Associated Press. All rights reserved. This material may not be published, broadcast, rewritten, or distributed.

CW9 provides CW network entertainment programming to the Tri-Cities area of Pasco, Richland and Kennewick, Washington and surrounding communities including Benton City, Prosser, Grandview, Sunnyside, Walla Walla, College Place, and Connell, Washington and Umatilla, Hermiston, Pendleton and Patterson, Oregon.