States get tracing apps to talk to each other as virus rises

  • North Carolina’ s cell phone app contact tracing SlowCOVIDNC is shown on Friday, Dec. 4, 2020, in Charlotte, N.C. An analysis shows that few Americans are utilizing contact tracing technology launched in a host of U.S. states and territories. (AP Photo/Chris Carlson)

RALEIGH, N.C — As coronavirus exposure notification technology slowly rolls out across the country, every resident in 17 states and the District of Columbia will now be able to send and receive alerts beyond their home state if they’ve tested positive for the coronavirus or come into contact with someone who has.