Cluster 36: hepatitis hiv known infection active history positive patients viral chronic Cluster 320: cmv cytomegalovirus infection pcr retinitis active herpes viremia positive viral Cluster 352: positive hiv known patients donor test hepatitis subject status excluded Cluster 426: hepatitis chronic infection active acute history known carrier viral hiv Cluster 802: opportunistic infections concurrent infection dosing cmv day previous viral active Cluster 1190: hepatitis known positive history patients tests active viral load infection Cluster 1509: viral hepatitis active chronic liver symptomatic disease cirrhosis nonviral known Cluster 2446: hepatitis indicating virus acute positive chronic test infection result known