We do care, but it's the work day for many of us, so we are not looking at the threads immediately. (I'm retired so I checked on after my morning house chores). Depending on the time of day an hour or two may pass before someone sees a new thread. Also, an update to a decades old case may not catch the attention of a new thread for a child or other vulnerable individual missing just now.
I'm not sure what it is you believe we can "figure out",
but thank you for trusting us to try. You stated "the man declined DNA" in an earlier post (which is now deleted, so that may have been posted in error) . I didn't see anything in the linked info about any refusal to give DNA just LE stating they have procedures to follow to do so.. If the refusal is from the man in the hospital, a lot depends on if legally he is considered mentally competent to make a decision of that nature.
If there is no voluntarily request agreed upon for the DNA sample the police would have to have a obtain a warrant or judicial order,
which requires demonstrating that the sample is necessary to identify or exclude him as a contributor to evidence. If the court order request is refused (assuming he is of a mind where he is competent to make decisions of that nature) refusal could result in contempt of court.
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One missing report stated the child had a "lazy" eye and a surgical scar on his ribcage. The lazy eye might have had some degree of correction over the years, but a scar is there to stay. That would be pretty easy to check, but again, the person's 4th Amendment rights don't allow for police to just come in and say "let us examine your body for a scar" without your permission.
https://www.doenetwork.org/cases/software/mp-main.html?id=173dmca
LE are very familiar with the procedures to obtain DNA, it just doesn't happen quickly. For the mother's sake, I hope the person in Chicago in the hospital will agree,
and can legally agree, to assist.
The only other question that came to mind for me was where did this lead come from. Unfortunately, from personal experience I've seen "cold cases" where someone calls in a tip or a lead just for personal attention. NOT saying this is the case, police and private investigators learn quickly how to spot he "crank" calls, but it does happen once in a great while.