From The TV IV
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American. Caroline Morrison's assistant and later NorBAC's Executive Director following her death. Left NorBAC temporarily in Season 4 to be treated for his Hepatitis and HIV infections.
In Season 1, it is revealed that he is HIV positive. In Season 3 his 13-year-old niece is found to be pregnant with a clone of herself. Due to various reasons she miscarriages. Became romantically involved with Virologist Rachel Woods in Seasons 3 and 4. Left NorBAC in Season 4 and went to Sweden to begin various medical trials for his Hepatitis and HIV infections, despite the risks and chances of healing he feels it is his only choice and David fails to get him to stay. On the final episode of Season 4, it is revealed that Weston comes back to NorBAC after 2 years away, he is doing well and the medical trials did in-fact succeed.