Cluster 17: hiv immunodeficiency virus human known infection positive patients testing infected Cluster 317: hiv immunodeficiency positive virus human patients excluded retroviral receiving anti Cluster 392: hiv antibodies immunodeficiency virus human known history testing required cohort Cluster 466: hiv immunodeficiency virus human known infection history patients testing diagnosis Cluster 1153: hiv infection known history patients status testing subjects test htlv Cluster 1175: immunodeficiency test human virus hiv positive result screening history known Cluster 1297: immunodeficiency virus human infection known history subject immunosuppressive testing disease Cluster 1529: serology hiv positive immunodeficiency virus human known negative infection evidence Cluster 1866: cluster differentiation cd hiv count positive immunodeficiency virus cells human Cluster 1910: immunocompromised hiv patients positive immunodeficiency virus human known antiretroviral currently Cluster 2203: hiv authority mandated health testing local unless immunodeficiency virus required Cluster 2465: immunodeficiency hiv virus human positive known patients status serologically individuals