In this Wednesday, April 1, 2020, photo, Rohingya refugees walk at the Kutupalong refugee camp, Cox’s Bazar, Bangladesh. Aid workers are bracing for a possible outbreak of the coronavirus in one of the world's largest refugee camps in Bangladesh, but officials are already warning that containing the disease among more than 1 million tightly packed Rohingya Muslims will be a daunting task. (AP Photo/Suzauddin Rubel)