The problem this presents for the early stage is how do you know for sure that the IBWG in the next cubicle or in the corner office is not actually PatientZero.
Meanwhile, Mexican authorities are focusing on a young boy being referred to as "patient zero" by his doctors -- 5-year-old Edgar Hernandez, who survived the earliest documented case of the swine flu outbreak.
There were nine deaths from infection among patients taking torcetrapib in the 15, 000-patient trial, compared to zero among the patients who did not get the drug.