By the numbers: ICE did not provide the exact numbers of immigrants who were offered the shot but declined. But the 30% figure has been shared internally, according to sources familiar. There have been nearly 20,000 COVID-19 cases and nine deaths among ICE detainees , according to agency data. There are currently more than 900 confirmed cases. Between the lines: Public health officials are concerned about groups of Americans — including young people and Republicans — eschewing available shots. One ICE official said immigrants have refused the shot for many of the same reasons as Americans who do so, including fear of the unknown.