Assessment of a Retrovirus Sequence and Other Possible Risk Factors for the Chronic Fatigue Syndrome in Adults.

Presents a study that investigated the prevalence of human T-lymphotropic virus type II (HTLV-II) gag gene retrovirus markers in persons with chronic fatigue syndrome (CFS) in the U.S. Identification of risk factors associated with CFS; Measurement of the prevalence of potential risk factors before illness onset for CFS; Examination of the sequence of the HTLV-II gag gene.