san diego for treatment. there are a few health checks. u.s. border officials look for signs of illness and may take temperatures if they think it s necessary. but there are concerns the virus is moving back and forth across the border. health care professionals at scripps mercy in southern california say roughly 48% of their patients have crossed the border in recent weeks. in mexico, the numbers are rising relentlessly. we watched large funerals for coronavirus victims with no social distancing. there are now more than 8,500 dead here. images like these of fresh graves in mexico, they re eerily similar in brazil, where the true death toll also likely much higher than the official count. brazil battling an explosion of cases, now suffering the world s second-highest death toll only behind the u.s. despite these long lines of traffic, mexico plans a phased reopening from june the first, including some tourist sites like cancun.