Docfag here.
In 20 years of medicine, I have never heard of a healthy 26-year-old dying in less than 24 hours of H1N1 flu (Swine flu). I found the San Diego Immunization registry but I'm not a California physician. if a CaliDocFag could log in and check the registry, we could see if Bre got her flu vaccine and when. While not 100% effective, it would be interesting to see if she was vaccinated.