In the spring, when Stony Brook Southampton Hospital began to fill up with patients who were "all so sick at the same time with the same thing, that's when it really got hard . . . and everything we were doing felt like it wasn't helping," recalled Samantha Jiudice, an intensive care unit nurse there. "Now, when the patients come . . . we have a checklist. It's not easier, it just comes more comfortably because we've experienced it already."