In order to determine if any individuals were harmed by tainted drugs, they would have to track every customer through every pharmacy that they sold through. People taking drugs tend to not be healthy, some have probably died, and they would then have to determine whether they died due to the medicine being tainted or impotent.
I'm willing to bet they didn't hunt down those people. The pharmacies in question are victims of the original crime, yes, but it would open them up to massive liability in the case that anyone did die.
In order to determine if any individuals were harmed by tainted drugs, they would have to track every customer through every pharmacy that they sold through. People taking drugs tend to not be healthy, some have probably died, and they would then have to determine whether they died due to the medicine being tainted or impotent.
I'm willing to bet they didn't hunt down those people. The pharmacies in question are victims of the original crime, yes, but it would open them up to massive liability in the case that anyone did die.