On Jan. 13 at about 8:30 a.m., Robert Selig and his wife, Candi, settled into an ER bay at Suburban for an hour-long IV infusion of antibodies. Both were sick with COVID-19. Selig, a 70-year-old pediatrician with diabetes and cardiac problems, broke out in a fit of coughs. He lay back in a hospital bed, eyes closed, his right hand resting on his electric-blue polo. Candi Selig, a pediatric nurse-practitioner, was beside him in her own bed, sluggish with fever, and pale as the crisp sheets. She touched her fingertips to her forehead. “I’ve had enough,” she said.