Of course, with the one person he relied on for this plan dead, there’s reason to suspect he’s already failed, though the goal might have just been to let his blood escape the facility.
The most obvious answer is that Ramsey Rosso will try to spread his influence through the infection of others while he’s still locked away in prison.
That blood will find someone, and with Godspeed coming to Central City next episode, that would be a big win for Rosso if his blood got attached to that.