You also have to pay off or kill any witnesses; anybody involved in security; the smugglers that transported the stuff without the FBI, NSA, and CIA tracking a bio attack; the people from the places fun things like MRSA went missing from; their security and witnesses; etc.
There’s a reason the go to is knife the guy in the alley and take their credit cards and ID. That’s one person. If there was a plot to kill this guy it’s right up there with the movie Burn After Reading.