Eli never kept a secret from Estis. So when Eli first learned of Estis' HIV-positive status only after the latter had died of complications from the virus, he was left to search for an answer that his brother could no longer give.
If HIV-negative men were more assertive about their status, they could take on a fairer share of responsibility in regard to HIV prevention. HIV-positive men have their own status to manage. It's not their responsibility to manage yours too, but it seems that they're expected to do so.
For the successful gay 20-something, the threat of HIV can almost seem outdated, a scary memory that our community is lucky to forget. This dangerous fallacy is what led me to get gobsmacked with a dose of reality during my routine, "socially responsible" STD test.