State data shows more beds have opened since, as some hospitals have canceled nonemergency surgeries. Still, many regions’ hospital systems remain stressed, according to state measurements. In some regions, such as the one covering Will and Kankakee counties, the number of available intensive care unit beds had dwindled to the single digits. And across Illinois, at last count, the number of open beds remained below 7,000, for a state with nearly 13 million residents.