Bias you say? Acknowledging a patients medical and social history are part of the expected data collection and DO factor into the making of a diagnosis. A negative workup was the result of two different physicians efforts. Her return with "an infection/sepsis" days later doesn't mean  she was ill during her visits. On more occasions than I can count, I've encountered drug addicts coming to the ER complaining of being "sick and in pain" when they are withdrawing from heroin. Drug users are at high risk for developing septicemia because they use dirty needles poor techniques to inject non sterile drugs. I've yet to hear what her "infection" was there are specif strains that cause bacterimia/septicemia in drug abusers. This article like the first one doesn't provide detailed or specifics of the patient's illness. Sorry someone died but I can't see where the physicians failed to perform the standard of care with this patient.