This issue is relevant to all tenants with bed bugs. If landlords had to tell neighbors when one tenant had bed bugs, it might mean more people get treatment more quickly (which would be a good thing for landlords, in the end, because the problem could be treated before their entire buildings get infested). It would help tenants, because they could be warned (and as we know, some people don’t suffer from bites, and so may have no other warning.) In the end, it would lessen the spread of the bugs in a building and, by extension, in the larger community.
And though no one will want to admit their building has bed bugs, in the end, it might mean more people talk about this and the stigma is lessened. You can’t run or hide from bed bugs, so you might as well talk about them.