Sandbox: ATL

HTLV-1 infection in the United States appears to be rare. Prevalence of infection is thought to be highest among blacks living in the Southeast. A prevalence rate of 30% has been found among black intravenous drug abusers in New Jersey, and a rate of 49% has been found in a similar group in New Orleans. It is possible that prevalence of infection is increasing in this risk group.

southern Japan, in the Caribbean, South America, and in Africa.

The overall incidence of ATL is estimated at about 1 per 1,500 adult HTLV-1 carriers per year.