I'm on an email list that tags along on the side of a daily morning 2 meter net. At various times I've been more active than others on that net, but I stick with it as best I can. There are some regulars who are on every single day, and a broad bunch of folks who show up from time to time as the seasons (and propagation) permits.
A regular on one of these nets has been absent at the usual time. People notice and check in on you. The demographics of ham radio being what it is, this can be of some concern - most folks who have an hour every day to play radio are retired, some for long enough that retirement is a second career.
The message back from the son, relayed a couple of times via net control, reporting on the hospital stay: "Hopefully, we’ll get him back home and back to being on the air soon."