Los Angeles health officials have told first responders to stop bringing adult patients who cannot be resuscitated to hospitals, citing a shortage of beds and staff as the latest COVID-19 surge threatened to overwhelm healthcare systems in America's second-largest city.<br /><br />The order, issued late on Monday and effective immediately, marked an escalation of measures being taken by state and local officials nationwide in the face of alarming increases in COVID-19 infections, hospitalizations and deaths.