anchor.diff:  "10847-2","PCR/amplification","Borrelia burgdorferi DNA","Ord","Borrelia burgdorferi"
   "10850-6","Unknown method","Cyclospora cayetanensis","Ord","Cyclospora cayetanensis"
   "10851-4","Culture","Escherichia coli O157:H7","Ord","Escherichia coli O157:H7"
  -"10860-5","Culture","Varicella zoster virus","Ord","VARICELLA ZOSTER VIRUS"
  +"10860-5","Culture","Varicella zoster virus","Ord","Varicella-zoster virus"
   "10896-9","IgG Antibody","Eastern equine encephalitis virus Ab.IgG","Qn","Eastern equine encephalitis virus"
   "10897-7","IgG Antibody","Eastern equine encephalitis virus Ab.IgG","Qn","Eastern equine encephalitis virus"
   "10898-5","IgM Antibody","Eastern equine encephalitis virus Ab.IgM","Qn","Eastern equine encephalitis virus"
  
positive.code: "29609-5","PCR/amplification","Hepatitis C virus RNA","Qn","Hepatitis C"
  "29610-3","PCR/amplification","Hepatitis B virus DNA","Ord","Hepatitis B"
  "29615-2","PCR/amplification","Hepatitis B virus DNA","Qn","Hepatitis B"
  "29662-4","IgM Antibody","Varicella zoster virus Ab.IgM","Ord","VARICELLA ZOSTER VIRUS"
  "29778-8","IgM Antibody","West Nile virus Ab.IgM","Ord","West Nile Virus"
  "29783-8","Total Antibody","Saint Louis encephalitis virus Antibody","Qn","Saint Louis encephalitis virus"
  "29785-3","IgG Antibody","Eastern equine encephalitis virus Ab.IgG","Ord","Eastern equine encephalitis virus"
  
negative.code: "676-7","Microscopy","Microscopic observation","Nom",
  "678-3","Microscopy","Microscopic observation","Nom",
  "680-9","Microscopy","Microscopic observation","Nom",
  "6812-2","IgM Antibody","Dengue virus Ab.IgM","Qn","Dengue virus"
  "688-2","Culture","Neisseria gonorrhoeae","Ord","Neisseria gonorrhoeae"
  "690-8","Culture","Neisseria gonorrhoeae","Ord","Neisseria gonorrhoeae"
  "6911-2","IgG Antibody","Brucella abortus Ab.IgG","Qn","Brucella abortus"
  