You definitely have a point....it would be a legal liability nightmare if you dispensed to someone without knowing their allergic history. Furthermore, yes, you are right again...we have no definitive way of knowing if their partners did take the medicine or not. It's really an ethical dilemma all around, with no clear way of ensuring that everyone receives proper treatment.
However, some larger health departments in parts of this country are doing just this. My health department isn't that progressive, I guess
We are now asking clients to list their email address, as well as their physical address, so we have another means of attempting contact in case their test results are positive.
SRKnurse