Dark days: Experts fear the holidays will fuel the US crisis

Registered nurse Romina Pacheco disinfects her powered air purifying respirator after tending to a patient in a COVID-19 unit decorated with Christmas stockings with nurses’ names written on them at Mission Hospital in Mission Viejo, Calif., Monday. (AP Photo/Jae C. Hong)

LOS ANGELES — Hard-hit California eclipsed 2 million coronavirus cases on Christmas Eve as the U.S. headed into a holiday season of travel and family gatherings that threaten to fuel the deadly outbreak across the nation.