At least 41 people were shot in Chicago from 11 a.m. Saturday through Sunday morning, four fatally. Three of those deaths happened since about midnight in a period when 35 people were shot. During one 2½-hour period alone, 25 people were shot — two fatally — in five multiple-injury shootings, authorities said.

Resources at local hospitals were taxed as victims and their families poured in. Access to Stroger Hospital was tightened. At one point, more than 200 people had converged on the hospital. Mount Sinai Hospital had to stop accepting new emergency cases for a while. Sixteen of those shot were teenagers. Twelve were 17 or younger. In the shooting in Gresham, seven of the victims were 21 or younger.