A medical worker waves goodbye to a motorist after testing a young person for COVID-19 at a Children's National Hospital drive-through (drive-in) coronavirus testing site at Trinity University, in Washington. (AP Photo/Andrew Harnik)

NEW YORK: Seven Northeastern states on Thursday (Apr 16) extended a shutdown to contain the coronavirus pandemic until May 15, even as President Donald Trump prepared to detail his plan to end the lockdown in the least-affected US states as early as May 1.