U.S., European leaders weigh reopening risks without a vaccine

A man adjusts a child's mask before heading out to the sand at Orchard Beach in the Bronx borough of New York, Sunday, May 17, 2020. Parks, boardwalks and beaches attracted some crowds this weekend, though city beaches aren't officially open and won't be for the upcoming Memorial Day weekend. (AP Photo/Seth Wenig)

NEW YORK — On a weekend when many pandemic-weary people emerged from weeks of lockdown, leaders in the U.S. and Europe weighed the risks and rewards of lifting COVID-19 restrictions knowing that a vaccine could take years to develop.