Serum concentrations of TT virus and TT virus-like mini virus in patients developing AIDS

Changes in viraemia of two chronically replicating circoviruses, TT virus (TTV) and TTV-like mini virus (TLMV), were investigated in patients developing HIV-related immune deficiency. In a few cases, episodes of a considerable increase in viraemia were observed, but in most patients there were no discernible increases as immune deficiency progressed. The deterioration of immune function associated with AIDS did not by itself have any obvious effect on TTV and TLMV.